Understanding Amazon PPC Cost: Expert Guide on Amazon Advertising Cost

Every Amazon seller eventually asks the same question: how much does Amazon PPC cost?

At first glance, it seems like a straightforward question: you set a budget, pay per click, and sales follow. In practice, Amazon PPC cost is determined by your category, your listing quality, your keyword choices, your campaign structure, and your own margin profile. The number in benchmark tables tells you what others are paying. What matters is calculating the maximum you can profitably pay and building a campaign structure that keeps your actual spend below it.

This guide covers the complete picture: what Amazon PPC costs across ad types and categories, how to calculate your specific maximum bid, how to plan a budget by brand stage, what management options cost, and how to reduce costs systematically without sacrificing sales volume.

How Much Does Amazon PPC Cost in 2026?

Amazon PPC costs average $0.99-$1.04 per click across all categories and ad formats in 2026. That number is useful as a starting reference, but your actual cost depends entirely on your category, keyword choices, and which ad format you are running.

Average CPC by Ad Type: Sponsored Products, Brands, and Display

Ad Format	Average CPC 2026	Typical Range	Best For
Sponsored Products	$0.91	$0.75-$1.50	Conversions and ACoS efficiency
Sponsored Brands	$1.50	$1.00-$2.50	Brand visibility and cross-selling
Sponsored Display	$2.25	$1.50-$3.50+	Retargeting and audience expansion
Amazon DSP	$3.00-$8.00+	Custom	Enterprise, programmatic reach

Which ad format has the lowest CPC? 

Sponsored Products consistently produce the lowest average CPC and the highest RoAS of any Amazon ad format. This is why every Amazon advertising strategy should establish Sponsored Products as the foundation before adding Sponsored Brands or Sponsored Display. A well-structured Sponsored Products campaign with weekly Search Term Report management and margin-based bids is the most cost-efficient Amazon advertising investment available.

Mobile CPC note: Amazon cost per click for mobile advertising runs approximately 16% higher than desktop ($1.10 vs $0.95), while mobile conversion rates run approximately 30% lower. Product pages must be fully optimised for mobile,  this is both a listing quality requirement and a direct cost control lever.

Amazon PPC Cost by Category: High, Mid, and Low CPC Niches

High-CPC Categories ($1.50-$3.50+)

Category	Average CPC	Notes
Consumer Electronics	$2.85	Extremely competitive; brand dominance matters
Health & Personal Care	$2.10	Supplements drive this average significantly
Major Appliances	$2.40	High-intent buyers, high ticket
Automotive & Powersports	$2.20	Niche but competitive
Beauty & Personal Care	$1.75	Skincare and cosmetics drive volume

Mid-CPC Categories ($0.80-$1.80)

Category	Average CPC	Notes
Home & Kitchen	$1.45	Broad category varies widely by subcategory
Clothing, Shoes & Footwear	$1.30	Fashion keywords competitive; footwear avg ~$1.35
Sports & Outdoors	$1.20	Seasonal spikes significant
Baby Products	$1.55	Emotionally driven purchases, high CVR
Pet Supplies	$1.40	Growing category, increasing competition

Lower-CPC Categories ($0.50-$1.20)

Category	Average CPC	Notes
Toys & Games	$1.20	Seasonal spikes (Q4) push higher temporarily
Books	$0.85	Highest conversion rates (15-20%); low CPC
Arts, Crafts & Sewing	$0.70	Low competition, niche audiences
Office Products	$0.95	Steady demand, moderate competition
Garden & Outdoors	$1.10	Seasonal category

Note on Heavy & Bulky items: Average CPC around $1.04, but conversion rates under 3%, making effective cost per sale significantly higher than the CPC alone suggests. Always calculate cost per acquisition, not just cost per click.

How Amazon PPC Costs Have Changed: 2024-2026 Trend

Year	Average CPC	YoY Change
2024	$0.89	—
2025	$0.95	+6.7%
2026	$0.99	+4.2%

CPC inflation has averaged 5-7% annually. Sellers relying on static bids set months ago are progressively overpaying for lower placement visibility.

Seasonal CPC spikes: During Prime Day and Q4 (Black Friday through Cyber Monday), CPCs regularly jump 40-80% above baseline. In Q4 2025, CPCs averaged $1.89-$2.12 per click. Budget for the higher cost of campaigns will exhaust their daily budgets before peak purchase hours.

What Factors Influence Amazon PPC Cost in 2026?

7 key factors influence how much does PPC costs Amazon in 2026:

1. Product Category 

The category determines baseline competitive pressure. Electronics and supplements have hundreds of established brands competing for the same buyer queries. Crafts and books have a fraction of that competition. Your category sets the floor on what a competitive bid looks like.

2. Keyword Type and Ad Format

High-volume generic keywords cost more than long-tail specific terms. “Supplements” costs significantly more than “magnesium citrate 400mg chewable tablets,” but the long-tail term converts better because the shopper has higher purchase intent.

Match type also affects cost. Broad match campaigns generate more irrelevant impressions, pushing effective CPC higher when waste is counted. Exact match campaigns on proven converting queries consistently produce lower effective CPC because every click has stronger intent alignment.

3. Listing Quality and Conversion Rate

Your conversion rate is one of the two variables in your maximum profitable CPC formula (Profit Per Unit x CVR). A listing converting at 15% can afford to bid twice as much per click as the same product at 7.5% CVR and still produce the same cost per sale.

Poor images, insufficient reviews, weak bullet points, and pricing above category average all suppress CVR. Every 1% improvement in conversion rate effectively lowers your cost per acquisition by approximately 9-10%.

4. Seasonality and Shopping Events

Prime Day, Black Friday, Cyber Monday, and Q4 drive advertiser competition to annual peaks. CPCs can increase 40-80% during these windows. Brands that do not plan for seasonal CPC inflation find budgets exhausted before peak purchase intent hours.

5. Campaign Structure and Budget Controls

A poorly structured campaign is a cost amplifier. Broad match campaigns without negative keywords serve irrelevant queries. Top-of-Search placement multipliers applied without conversion data inflate bids by up to 100%. Auto campaigns without harvest cycles mix high-intent and low-intent traffic in the same budget pool.

Campaign structure directly determines how efficiently the budget converts into relevant traffic. The same daily budget in a well-structured account produces significantly more converting clicks than the same budget in a fragmented account.

6. Mobile vs Desktop Traffic

Amazon CPC for mobile advertising averages approximately 16% higher than desktop, while mobile CVR runs approximately 30% lower. If your product page is not optimized for mobile, mobile traffic is systematically less efficient than desktop at a higher per-click cost.

7. Ad Placement 

• Top of Search (first page): Highest CPC, highest visibility, highest conversion rate potential. Placement multipliers of 50-100% only justified when the Placement Report data confirms this position converts at or below the target ACoS for this specific ASIN
• Product Detail Pages: Moderate CPC, lower competition, useful for competitor conquest and complementary product targeting
• Rest of Search: Lowest CPC, lower intent best for discovery at conservative bids

Amazon PPC Cost Calculator: Find Your Maximum Profitable CPC

Before setting any bid, you need to know the maximum CPC you can profitably pay. This is not Amazon’s suggested bid range that reflects competitive activity, but your margin. Your maximum profitable CPC is specific to your product’s unit economics.

The Break-Even CPC Formula Explained

Step 1 Calculate profit per unit:

Input	Example
Sale price	$40.00
Cost of goods (COGS)	-$12.00
Amazon FBA + referral fees	-$8.00
Profit per unit	$20.00

Step 2 Calculate break-even ACoS:

Break-even ACoS = (Profit Per Unit / Sale Price) x 100 ($20 / $40) x 100 = 50%

Step 3 Calculate maximum profitable CPC:

Max Profitable CPC = Profit Per Unit x (Conversion Rate / 100) $20 x (10% / 100) = $20 x 0.10 = $2.00

At 10% CVR, you can bid up to $2.00 per click and break even. To protect a profit margin, target 70-80% of this maximum:

Target CPC for 20% profit margin: $20 x 0.80 x 0.10 = $1.60

The 2.5% Rule: Quick Estimate for New Sellers

For sellers without reliable CVR data, the 2.5% Rule provides a starting estimate:

Target CPC = Product Price x 2.5%

Assumes 10% CVR and 25% target ACoS. For a $30 product: $30 x 0.025 = $0.75 maximum CPC.

Replace this with the break-even formula once campaigns have 14-21 days of conversion data.

Amazon PPC Bid Calculator

Rather than doing this calculation by hand for every ASIN, use our dedicated Amazon PPC Cost Calculator. Enter your product price, COGS, Amazon fees, and conversion rate, and the calculator instantly produces:

• Your break-even CPC and target CPC at your chosen profit margin
• Break-even ACoS and target ACoS
• Target RoAS
• Estimated daily budget based on your click volume goal
• Visual breakdown of how each dollar of sale price is allocated across COGS, fees, ad spend, and profit

The calculator also shows whether your current CPC bid is within the safe range, above target but below break-even, or above break-even (losing money on every click) with a specific verdict and recommended action.

Use the Amazon PPC Cost Calculator

How Much Should You Spend on Amazon PPC?

Knowing what Amazon PPC costs per click is the first question. Knowing how much to spend total, daily and monthly is the second. The answer varies significantly by brand stage.

Budget Framework by Brand Stage

Stage 1 New product launch (first 60-90 days): sales velocity to build organic rank. ACoS efficiency is secondary.

• Daily budget: $30-$75 per campaign
• Start with auto campaigns; move converting search terms to manual exact match after 14-21 days
• Accept above-break-even ACoS measure success by rank improvement and new-to-brand rate
• Monthly spend estimate: $1,000-$3,000 for a single ASIN in a competitive category

Stage 2 Established product (months 3-12): improve ACoS efficiency while maintaining or growing sales volume. TACoS should be declining as organic rank builds.

• Protect exact match campaigns from hitting daily budget limits
• Auto and broad campaigns capped at discovery budgets
• Monthly spend: 10-15% of product revenue is a sustainable allocation

Stage 3 Scaling brand (12+ months, multiple ASINs): portfolio-level efficiency TACoS under 10%, organic rank defended, expansion budget for new ASINs.

• Budget by ASIN role: core ASINs protected, expansion ASINs funded for growth, support ASINs capped for efficiency
• Competitive categories often require 15-20% of revenue to maintain position during scaling

Daily Budget vs Monthly Budget: How to Plan

Monthly budget / 30 = Daily budget per campaign

For $3,000/month across three campaigns: $100/day per campaign.

Two critical rules:

Never let best-performing campaigns hit their daily budget limit. When a campaign exhausts its daily budget before the day ends, it stops showing ads, including during peak evening purchase hours. Highest-converting exact match campaigns should have budgets set 20-30% above their typical daily spend.

Use Portfolio Budgets for seasonal control. Amazon’s Portfolio feature allows setting a total budget cap across multiple campaigns, useful for controlling total spend during Prime Day or Q4 without adjusting individual campaign budgets.

Amazon PPC Costs as a Percentage of Revenue

Brand Stage	TACoS Target	Notes
Launch phase	20-40%	Above break-even acceptable for rank building
Growth phase	10-20%	ACoS declining as organic rank builds
Mature brand	Under 10%	Organic carries significant volume

Most successful sellers target 10-15% of revenue for total Amazon PPC spend, with TACoS ideally under 10% for brands with established organic rank.

Important: If TACoS is rising while ACoS is stable or declining, organic rank is eroding, and the ACoS improvement is cosmetic. Reducing Amazon PPC spend to improve the metric makes the underlying problem worse.

Amazon PPC Management Cost: DIY, Software, Freelancer, or Agency?

Amazon PPC management cost is a separate expense from ad spend itself. Both belong in your total investment calculation.

Management Options and Cost Ranges

Option	Monthly Cost	Ad Spend Context	What Is Included
DIY (self-managed)	$0 + your time	Any level	Full control, full-time commitment
Amazon PPC software	$100-$400/month	$2k-$15k/month	Bid automation, reporting only
AI-managed PPC service	$500-$2,000/month	$5k-$50k/month	Algorithmic management strategy not included
Freelance specialist	$500-$2,500/month	$3k-$20k/month	Execution strategy depends on seniority
Boutique Amazon PPC agency	$1,000-$3,000/month	$5k-$30k/month	Strategy + execution for focused accounts
Full-service Amazon agency	$2,000-$7,000/month	$10k+	PPC + listing + inventory connected

Typical management fee as a percentage of ad spend: The industry standard percentage-of-spend model runs 10-20% of monthly ad spend. Flat retainer models are increasingly preferred by brands burned by percentage models, where fees grew without proportional performance improvement. For the full breakdown of fee structures and what each tier includes, see our Amazon PPC agency pricing guide.

Amazon PPC Software vs Managed Service: Long-Term Cost Comparison

The direct question many sellers ask: “Amazon ads automation software vs hiring a managed service, what is cheaper long term?”

Software is cheaper in monthly fees, but not always in total cost. A $200/month tool running on a poorly structured account produces poor results faster. Structural problems include wrong match types, no harvest cycle, no negative keyword discipline, and compounding over time. The monthly software fee is low; the cost of structural inefficiency running for 12 months at scale is not.

Managed service is more expensive in fees but often cheaper in total cost when it eliminates structural waste, improves conversion efficiency, and prevents the bid misalignment that costs more in monthly ad spend than the management fee.

The correct question is not which costs less per month, but which produces a lower total cost per sale at 12 months.

AI-managed Amazon PPC pricing for $500K-$2M annual revenue brands: AI-managed PPC services at this revenue level typically price at $500-$2,000/month. These services automate bid execution efficiently but require human strategic direction for campaign architecture decisions, keyword structure, and listing-to-campaign connections that algorithms cannot make.

For a full comparison, see our Amazon PPC software vs full-service management guide.

How to Reduce Your Amazon PPC Costs Without Reducing Sales

Reducing Amazon PPC costs is not about spending less, it is about spending more precisely. These five actions consistently produce the largest cost reductions without sacrificing sales volume.

1. Target Long-Tail Keywords

Long-tail keywords have three cost advantages: lower CPC (less competition), higher CVR (more specific intent), and better listing relevance match.

“Running shoes” costs $2.50-$4.00 per click in competitive categories. “Women’s waterproof trail running shoes size 8” costs $0.60-$1.20 and converts at 2-3x the rate because the shopper knows exactly what they want.

2. Add Negative Keywords Weekly

Negative keywords are the fastest way to reduce wasted spend. Every irrelevant search term consuming budget without converting is an eliminable cost.

Weekly process: Pull the Search Term Report for the last 7 days. Sort by spend descending. Any term with $15+ spend and zero conversions: add as a negative phrase at the campaign level immediately.

Pre-launch negatives: “free,” “cheap,” “DIY,” “how to make,” “review,” “tutorial,” “wholesale,” “bulk,” “sample,” “used,” “refurbished. “Real outcome: A Home & Kitchen brand added 57 negative keywords and switched to exact match targeting. ACoS dropped from 42% to 25% in 6 weeks. Average CPC fell from $1.60 to $1.10. Sales increased by 22% because the budget concentrated on qualifying traffic.

3. Implement Dayparting

Not every hour converts at the same rate. Conversion rates peak in evening hours (7pm-11pm in the target time zone) for most consumer categories. Running full budgets during low-conversion hours wastes spend that could be compounded during peak hours.

Amazon does not offer native dayparting in Campaign Manager. Budget rules and third-party tools (Scale Insights, Ad Badger) automate this. Without a tool, manual bid adjustments by time of day require daily maintenance via bulk operations.

4. Match Type Discipline

Match Type	Purpose	Budget Priority	Bid Level
Exact match (proven terms)	Conversion	Highest never hit the daily limit	Maximum profitable CPC
Phrase match (mid-funnel)	Consideration	Moderate	70-80% of exact match bid
Broad match (discovery)	New term discovery	Low-capped budget	50-60% of exact match bid
Auto (discovery)	New term discovery	Low-capped budget	Conservative default bid

Brands running primarily broad match and auto campaigns without this structure consistently pay more per converting click than brands with disciplined match type separation because converting traffic is diluted by non-converting traffic in the same campaign.

5. Use Amazon PPC Tools and Automation

Because max profitable CPC = Profit Per Unit x CVR, every 1% improvement in CVR directly increases the amount you can profitably bid or produces the same sales volume at lower bid requirements.

The math: A product converting at 8% has a max profitable CPC of $1.60 at $20 profit per unit. The same product at 12% CVR has a max profitable CPC of $2.40 or can achieve the same volume at $1.60 while generating more profit per click.

Four listing elements that move CVR the most:

1. Main image largest single impact on CTR, which feeds CVR
2. Review count and rating below 15 reviews or below 4.0 suppresses CVR significantly
3. Price relative to the category above category average requires visible differentiation
4. A+ Content quality is most impactful for consideration-heavy product categories

A 5% increase in CVR effectively lowers cost per sale by approximately 30% without touching a single bid.

Is Amazon PPC Worth It? How to Calculate ROI Before You Scale

The question behind dozens of cost queries in this list. The answer is conditional.

The Three Conditions That Make Amazon PPC Worth It

Condition 1: Margin above 25%, Below 25% margin, the room for advertising spend after COGS and Amazon fees is too narrow. Minor CPC increases push campaigns above break-even. The minimum comfortable margin for Amazon PPC profitability at category-average CPCs is 25-30%.

Condition 2: Listings converting at or above category average Amazon PPC amplifies what is already working. A listing converting at 14% produces profitable results at category-average CPCs. A listing converting at 5% requires either below-average CPCs (harder in competitive categories) or generates above-break-even ACoS indefinitely. Fix the listing before scaling advertising.

Condition 3: Stable inventory depth. Every stockout while campaigns are running wastes the preceding ad spend and damages the organic rank signals that those campaigns were building. Amazon PPC is worth it when inventory is managed to prevent stockouts during active advertising windows.

How to Calculate Amazon PPC ROI Before Scaling

Step 1 Calculate cost per acquired customer: Total ad spend last 30 days / Total ad-attributed orders = Cost Per Acquisition (CPA)

Step 2 Compare CPA to profit per unit: CPA < Profit Per Unit: Advertising is profitable on the ad-attributed sale alone. CPA > Profit Per Unit: evaluate whether the TACoS trend justifies the investment through organic rank building

Step 3 Check TACoS trend over 90 days: TACoS declining: Amazon PPC is building organic rank → worth continuing TACoS rising with flat ACoS: organic rank eroding → Amazon PPC is substituting for organic, not building it

Step 4 Scale when: Current campaigns are hitting daily budget limits, CPA is below profit per unit, and TACoS is stable or declining.

Is Amazon PPC Worth It for Small Sellers?

Yes, with conditions. Small sellers should start with $500-$1,500/month to validate before scaling, focus exclusively on exact match campaigns for proven converting search terms, and not attempt to compete on broad high-volume keywords against established brands. Precision over scale always.

What’s Next for Amazon PPC Costs: Trends Through 2026

CPC Inflation Will Continue

The structural drivers of Amazon PPC cost inflation are not temporary. More advertisers enter Amazon each year. Amazon is expanding ad inventory, Prime Video ads, Fresh store placements, and expanded DSP reach, but advertiser demand is outpacing inventory growth. Continued upward pressure on CPCs, particularly in competitive categories, is the reliable forecast.

Algorithm updates in late 2025 further prioritised relevance signals in auction ranking, meaning well-structured campaigns with strong listing-to-keyword alignment now get more efficient auction results than poorly structured campaigns at equivalent bid levels.

Strategies That Will Keep Amazon PPC Profitable

Diversify traffic sources. Brands entirely dependent on Amazon PPC for discovery are exposed to every CPC increase. Off-Amazon traffic through influencer marketing, social platforms, and owned email lists, with Amazon Brand Referral Bonus offsetting some traffic cost, reduces this dependency.

Use the Brand Referral Bonus. Sellers driving external traffic to Amazon through approved channels receive an average 10% referral fee credit. This directly offsets Amazon advertising costs for brands investing in off-Amazon marketing.

Build organic rank through systematic TACoS management. The most durable defence against CPC inflation is organic rank. As TACoS declines over time, reflecting growing organic sales alongside stable paid spend, the absolute cost of Amazon PPC becomes a smaller percentage of total revenue.

Connect Amazon PPC to the full account system. The brands that maintain Amazon PPC profitability through CPC inflation are the ones where advertising decisions connect to listing quality, inventory signals, and customer data rather than existing as a standalone campaign activity. When a full-service Amazon agency manages Amazon PPC alongside listing creative, inventory forecasting, and customer insights, the decisions at each layer improve the others, producing compounding efficiency that isolated campaign management cannot replicate.

AMZDUDES manages Amazon advertising for brands across dozens of categories. If your current Amazon PPC is spending within budget but not producing the margin improvement, organic rank growth, or new-to-brand acquisition your business needs, the gap is almost always structural, not tactical.

Book a free account review | See what this approach delivers

Frequently Asked Questions

How much does Amazon PPC cost in 2026? 

Amazon PPC averages $0.99-$1.04 per click across all categories. Sponsored Products average $0.91/click. Sponsored Brands average $1.50/click. Sponsored Display averages $2.25/click. High-competition categories like Electronics can reach $2.85-$6+ per click. Lower-competition categories like Books average $0.70-$0.95 per click.

What is Amazon CPC, and how is it calculated? 

Amazon CPC (cost per click) is the amount you pay each time a shopper clicks your sponsored ad. It is determined by a second-price auction that the winning bidder pays $0.01 more than the next highest bid, not their maximum bid. Ad relevance and listing quality influence delivery alongside bid level, meaning a well-structured campaign with a relevant listing can win placements against higher bids from less relevant competitors.

What is a good ACoS on Amazon? 

A good ACoS is one below your break-even ACoS: (Profit Per Unit / Sale Price) x 100. There is no universal good. ACoS, the right target depends entirely on your unit economics, not industry averages. For a product with a $20 profit on a $40 sale, the break-even ACoS is 50%. A target ACoS of 25-30% in this example means advertising is profitable with margin to spare.

How much should I spend on Amazon PPC? 

Start at $20-$50 per day per campaign to gather data. Scale campaigns converting at or below break-even ACoS by 20-30% weekly. Target 10-15% of product revenue as total Amazon PPC spend for established brands. TACoS under 10% is the benchmark for mature brands with strong organic rank. Never cut Amazon PPC spend to improve ACoS if TACoS is rising organic rank is eroding.

What is the 2.5% Rule for Amazon PPC? 

A quick starting estimate: your target CPC should be no more than 2.5% of your product’s sale price, assuming 10% CVR and 25% target ACoS. For a $30 product: $30 x 0.025 = $0.75 maximum CPC. Replace with the break-even formula once campaigns have 14-21 days of conversion data.

How much does Amazon PPC management cost? 

DIY: $0 (your time). Software tools: $100-$400/month. AI-managed services: $500-$2,000/month. Freelance specialists: $500-$2,500/month. Boutique agencies: $1,000-$3,000/month. Full-service agencies: $2,000-$7,000/month. Typical percentage-of-spend fees run 10-20% of monthly ad spend. For a full breakdown, see our Amazon PPC agency pricing guide.

Is Amazon PPC worth it for small sellers? 

Yes, with conditions: margin above 25%, listings converting at or above category average, and stable inventory. Start with $500-$1,500/month focused on exact match campaigns. Amazon PPC amplifies what is already working, fix the listing before scaling the advertising.

How do I reduce my Amazon PPC costs? 

Five proven actions: target long-tail keywords (lower CPC, higher CVR), add negative keywords weekly from Search Term Report, implement dayparting to concentrate spend in high-conversion hours, enforce match type discipline, and improve listing conversion rate. Every 1% CVR improvement lowers the effective cost per sale by approximately 9-10%.

What is Amazon PPC, and how does it work? 

Amazon PPC (pay-per-click) is Amazon’s auction-based advertising system. Sellers bid on keywords. When a shopper searches and their query matches a keyword you are bidding on, your ad is eligible to appear. You pay only when someone clicks. The winning bidder pays the second-highest bid plus $0.01.

How do FBA fees affect what I can afford to bid? 

FBA and referral fees reduce profit per unit, which directly lowers your maximum profitable CPC. When fees increase, recalculate your break-even CPC using updated numbers. However, FBA’s Prime badge increases average CTR by 5-15% compared to non-FBA offers, partially offsetting the higher fee through improved click efficiency.

What is a good Amazon PPC conversion rate? 

Category average is 9-12%. Top sellers achieve 15%+ through optimised listings, competitive pricing, and strong review profiles. Below 8% on relevant high-intent keywords is a listing quality signal the constraint is in the product page, not the campaign. No bid adjustment improves CVR; only listing improvements do.

How much does it cost to hire an Amazon PPC expert? 

A freelance specialist runs $500-$2,500/month. A full-service agency runs $2,000-$7,000/month. For sellers just starting, self-management using our step-by-step Amazon ads guide is a reasonable first step before investing in professional management.

What are typical monthly costs for Amazon PPC agency management services? 

For a brand spending $10,000-$30,000/month on ads: $1,000-$3,500/month for a specialist agency, $2,000-$5,000/month for full-service management. At $50,000+/month ad spend: $3,000-$8,000/month or 8-15% of ad spend with performance components.

How do I start Amazon PPC? 

Start with Sponsored Products automatic campaigns at $20-$50/day. After 14-21 days, pull the Search Term Report, move converting queries to manual exact match campaigns, and add non-converting terms as negatives. For a complete step-by-step setup guide, see how to run Amazon ads.