You get three agency proposals. One is a flat monthly fee. One wants a percentage of sales. One wants both, plus a setup fee. They are impossible to compare, and nobody tells you what you will actually pay at the end of the year.
So how much does an Amazon agency really cost, and how do you know if it is worth it?
Quick Answer
An Amazon agency usually charges in one of four ways: a flat monthly retainer, a percentage of total sales, a percentage of ad spend, or a base fee plus a performance or growth bonus. What you actually pay depends on your revenue, how many ASINs and marketplaces you have, and what is included. The right question is not "how cheap is the fee" but "how much extra profit does it produce." A good agency should add more contribution margin than it costs within the first 90 days, and its pricing should reward profit, not just revenue or ad spend.
Key Takeaways
- The pricing model matters more than the price: A fee tied to ad spend rewards spending more. A fee tied to revenue rewards growth at any margin. Know what you are paying them to chase.
- Ad spend is never included: The agency fee is on top of what you pay Amazon for ads, and that bill keeps growing.
- Hidden costs live in the contract: Setup fees, creative billed separately, minimum terms and long notice periods change the real cost.
- Measure in profit, not revenue: Compare the fee to the change in contribution margin, not the change in sales.
- Ask who does the work: The fee buys you whoever actually runs the account. Find out if that is the person on the sales call.
In this article
- What Is an Amazon Agency, and What Are You Paying For?
- How Do Amazon Agencies Charge?
- What Hidden Costs Should I Look For?
- Is an Amazon Agency Worth It?
- Agency vs In-House vs Freelancer: What Does Each Really Cost?
- How to Choose an Amazon Agency (and Compare Prices Fairly)
- How We Handle This at Globious
- What Most Agencies Get Wrong
- The Bottom Line
- Frequently Asked Questions
What Is an Amazon Agency, and What Are You Paying For?
An Amazon agency runs some or all of your Amazon channel for you. That can mean only PPC, or the full account: advertising, listings, SEO, creative, inventory planning, fees, brand protection and reporting.
That is why prices are so hard to compare. A "PPC agency" and a "full account management agency" are not the same product, even if both proposals say "Amazon growth." Before you compare prices, compare scope.
How Do Amazon Agencies Charge?
Here are the main models you will see in proposals:
| Pricing model | How it works | What it rewards | Watch out for |
|---|---|---|---|
| Flat retainer | Fixed monthly fee for an agreed scope | Predictability for both sides | Scope creep, and no reason to push harder when things go well |
| Percentage of total sales | A set % of your Amazon revenue, often with a monthly minimum | Revenue growth | Growth bought with ad spend or discounts still pays the agency |
| Percentage of ad spend | A set % of what you spend on Amazon Ads | More ad spend | The agency earns more when your ads cost more. The worst incentive for profit |
| Base fee + performance bonus | Lower fixed fee plus a bonus on growth above a baseline | Growth above where you started | How "growth" and the baseline are defined. Get it in writing |
| Guarantee-backed sprint | Fixed-term project with refunds tied to agreed results | Proving results early | What exactly is measured, and who measures it |
None of these is wrong by default. The question is whether the model lines up with what you want. If your goal is profit, a fee that grows when your ad bill grows is working against you.
What Hidden Costs Should I Look For?
The monthly fee is only part of the bill. Read the contract for these:
- Setup or onboarding fees. Sometimes worth it if a real audit and restructure happens. Sometimes it is just a fee.
- Creative billed separately. New images, A+ content, video and storefront work are often extra.
- Minimum terms. A 6 or 12 month lock-in means you pay even if it is not working.
- Notice periods. 60 or 90 days of notice is 2 or 3 more months of fees after you decide to leave.
- Tool costs. Some agencies pass software subscriptions on to you.
- Ad spend itself. This is the big one. The agency fee does not include what you pay Amazon for ads.
On that last point: Amazon's advertising business brought in $19.8 billion in Q2 2026, up from $15.7 billion in Q2 2025, according to Amazon's Q2 2026 results filed with the SEC. More brands are bidding for the same shoppers. That money comes from sellers. An agency that only knows how to spend more will cost you more every year.
Is an Amazon Agency Worth It?
It is worth it when it adds more profit than it costs. That is the whole test.
Here is simple math you can run on any proposal. Say you do $100,000 a month on Amazon. Your contribution margin, after COGS, Amazon fees and ads, is 15%. That is $15,000 a month.
An agency charges you $5,000 a month all in. To break even, it needs to add $5,000 a month in contribution margin. That could come from:
- Cutting wasted ad spend
- Raising conversion so the same traffic sells more
- Fixing fee errors and size tier mistakes
- Growing organic sales so ads carry less of the load
If after 90 days your contribution margin went from $15,000 to $22,000, the agency made you $2,000 a month after its fee. If sales went up 30% but contribution margin stayed at $15,000, you paid $5,000 a month for a busier dashboard.
These numbers are only an example. Plug in your own.
Agency vs In-House vs Freelancer: What Does Each Really Cost?
| Option | Main cost | Best for | Main risk |
|---|---|---|---|
| Agency | Monthly fee, plus ad spend | Brands that want senior experience across PPC, listings, fees and protection without hiring a team | Paying for senior people and getting juniors |
| In-house hire | Salary, benefits, tools, management time | Larger brands with enough volume to keep a full team busy | One person cannot be expert in everything, and you carry the hiring risk |
| Freelancer | Hourly or project fee | A single, clearly defined job, like a listing rewrite or a PPC cleanup | No ownership of the full channel. Gaps between specialists |
The cheapest option on paper is often not the cheapest in profit. A low fee that misses $8,000 a month in wasted ad spend is the expensive one.
How to Choose an Amazon Agency (and Compare Prices Fairly)
- Get your baseline first. Before any sales call, pull 90 days of numbers from Seller Central: total sales from Business Reports, ad spend and TACOS from the Advertising Console, net proceeds from Payments > Date Range Reports. You cannot judge an agency without knowing where you started.
- Check your conversion and search share. Business Reports > Detail Page Sales and Traffic by Child Item for Unit Session Percentage. Brand Analytics > Search Query Performance for click and purchase share on your top queries. Ask each agency what they would do about these numbers.
- Check your fees. Pull the Fee Preview report. Ask each agency whether they review size tiers and fee categories. Many never look.
- Compare scope line by line. PPC only, or PPC plus listings, creative, SEO, fees, inventory and brand protection? Write it down for each proposal.
- Ask who runs your account. Name, experience, and how many other accounts they handle. Ask to meet them before you sign.
- Read the exit terms. Minimum term, notice period, who owns the ad account and the creative after you leave.
- Ask what happens if it does not work. A good agency has a clear answer. "Give it 6 months" is not one.
- Check credentials, but do not stop there. Amazon's Service Provider Network lists providers that Amazon vets and monitors. Amazon also says it does not endorse any provider. Being listed is a starting point, not proof of results.
How We Handle This at Globious
We start with a free Clarity Call. We go through your PPC, fees, listings and organic rank, and show you every gap with an ROI projection. You see the numbers before any pitch.
If it makes sense, we run the Podium Protocol: a 90-day optimization sprint with a money-back guarantee at the end of each month. If month one does not show measurable improvement against your baseline, month one is refunded. The same logic applies at day 60 and day 90. Senior operators run the work. The people on the call are the people in your account.
Zelmins came to us stuck on a plateau with high TACOS. Monthly revenue went from $40K to $75K, at 20% net profit. That is the point of paying for help: growth and margin together.
What Most Agencies Get Wrong
- They price on ad spend. Then they get paid more when your ads get more expensive. That is not a partnership.
- They sell senior, staff junior. The expert on the call disappears after the contract is signed. You are paying senior rates for someone learning on your account.
- They report revenue, not profit. A 30% sales jump in the monthly report means nothing if the margin went with it.
- They lock you in. If an agency is confident in its results, it does not need a 12-month contract to keep you.
- They treat PPC as the product. PPC is a tool. Organic ranking is the goal. An agency whose only lever is bids will keep raising your ad bill.
The Bottom Line
Do not shop for the cheapest agency. Shop for the one whose fee you can tie to profit. Pull your baseline numbers this week, ask every agency the same questions, and do the contribution margin math on each proposal. If they cannot show you how they will earn their fee back within 90 days, keep looking.
Frequently Asked Questions
How do most Amazon agencies charge?
Most use a flat monthly retainer, a percentage of total Amazon sales, a percentage of ad spend, or a base fee plus a performance bonus. Many percentage-based models also have a monthly minimum. Always check whether ad spend, creative and setup are included or billed on top.
Is a percentage of sales a fair way to pay an Amazon agency?
It can be, because the agency only earns more when you sell more. The risk is that sales can grow while profit shrinks, for example through heavy ads or discounts. If you choose this model, track contribution margin every month, not just revenue.
Does the agency fee include my Amazon ad spend?
No. Ad spend is paid to Amazon separately, on top of the agency fee. When you compare proposals, add the expected ad budget to the fee to see the full monthly cost of each option.
Is an Amazon agency cheaper than hiring in-house?
It depends on your size and scope. One in-house hire costs salary, benefits, tools and management time, and still covers only one skill set. An agency spreads senior experience across PPC, listings, fees and protection, but only if senior people actually do the work.
How long before an Amazon agency pays for itself?
Wasted ad spend and fee errors can usually be fixed in the first 30 days, so you should see some return in month one. Bigger gains from conversion and organic ranking usually take 60 to 90 days. If there is no measurable improvement after 90 days, the agency is not working.
What should I ask before signing with an Amazon agency?
Ask who exactly will run your account, what the minimum term and notice period are, what is included in the fee, who owns the ad account and creative if you leave, and what happens if results do not come. Clear answers to those five questions tell you most of what you need.
If you want to talk through your Amazon growth goals and what kind of help would actually get you there, book a call with Mayer.
