How to choose an Amazon agency: the complete 2026 buyer's guide

Why the stakes are higher in 2026

Amazon increasingly runs on advertising, and this completely changes what a partner is worth to you.

Third-party sellers now account for the majority of units sold on the marketplace, and Amazon’s advertising business has grown into one of the largest in retail. More sellers keep bidding on the same keywords, which means the cost of visibility keeps climbing.

This pressure lands squarely on your margin per unit. Placement, which used to come from relevance, now has a price attached, and every extra dollar of the ad spend comes out of the same contribution margin, which funds your growth. 

Across all the accounts we manage, a rising cost per click is the most common reason why a healthy catalog suddenly looks flat. What matters here is the margin, which is measured against a controlled ACoS (Advertising Cost of Sales). A partner who cannot control ACoS while protecting your margin ends up costing even more than the retainer itself.

What are the main types of Amazon agencies?

Amazon agencies fall into a few models, and the right one depends on your revenue and how much you want to run in-house. Choosing the right agency starts with knowing what each model actually delivers. Match that model to your gap before you compare anything else.

The table below compares the common models, where each wins and the trade-off. The more of your account you want handled, the closer you move to full-service Amazon management.

Think of this table as a map of who owns what. Once your Amazon revenue exceeds $1 million a year, full-service is the better option, because a single person cannot keep listings, ads, and account health moving at the same time. 

PPC-only vs. full-service

An Amazon PPC agency runs your advertising. The process involves campaign structure, bids, keywords, and ACoS. A full-service agency runs advertising plus listings, SEO, creative, and account health all under one team.

Amazon SEO is the work of ranking your listings in Amazon’s organic search results, where shoppers click without an ad. PPC-only is best when your listings and Amazon SEO are strong and ads are your only gap, because advertising is your one lever.

Choose full-service when your organic rank, creative, and account health all need work  at once. For established brands that want profitable growth, ads and listings move together, so splitting them slows results.

Agency vs. in-house vs. freelancer

This choice is primarily about cost, control, and depth. An in-house hire gives you the most control and the highest fixed cost. A freelancer is cheaper and narrower and rarely covers the full scope that established brands need in order to grow profitably. 

The cost comparison drives most of this decision. The next section shows the math with real numbers. 

How much should an Amazon agency cost?

Amazon agency pricing follows four models, and each one creates a different incentive. The model you pick decides whether the agency is rewarded for your results or your spending. It’s important to read the incentive before you read the price.

The table below shows each pricing model, how it works, and the incentive it creates. Weigh the incentive against how you want the spend to be managed.

Our take: a flat retainer aligns the agency with margin, since the fee holds steady whether the spend goes up or down. A percentage of spend pulls the other way, rewarding a bigger budget.

Olifant Digital prices as a flat retainer, starting at $2,000 per month, with custom pricing based on catalog complexity and no percentage-of-spend fees. Each engagement is backed by our 60-day money-back guarantee on management fees. Our daily Amazon PPC management is included in that fee.

Agency vs. in-house: what does the math actually say?

Before making the final decision, run the numbers, because base salary is only the start. A real in-house cost includes benefits, software, and management overhead. 

A senior Amazon operations specialist in the US costs about $100,000 to $160,000 a year once you factor in the full load. Base salary is usually the smallest line in that total, which is exactly why the hire looks cheaper on paper than it turns out to be in practice.

Even that range leaves things out. To recruit someone can take months, and a new hire needs a ramp-up period before the account improves. If this person leaves, you cover the gap until the next one is ready to take over. None of this shows on a salary line, and all of it lands on your Amazon revenue.

How to choose an Amazon agency: criteria that separate good from bad

Once the model and budget are clear, use the checklist below to judge the agency by the behavior each criterion tests and the outcome it drives.

There are two metrics that are important here. TACoS (Total Advertising Cost of Sales), which measures the ad spend against your total sales, including organic sales, and ACoS (Advertising Cost of Sales), which measures it against ad-driven sales only.

Keep both in mind as you read the checklist below, as most of these criteria relate to whether an agency can move them in the right direction.

1. Proof: Look for named clients and specific numbers, rather than just logos, so you can verify the results before you trust them.
2. Pricing-model fit: Favor a flat retainer, which holds the fee steady, instead of scaling with your ad spend.
3. Staffing seniority: Confirm who touches your account on a daily basis, since senior specialists protect the rank and ACoS that juniors put at risk.
4. Reporting transparency: Ask for reporting on ACoS, TACoS, and margin on the set cadence that you agree to upfront.
5. Margin tracking: Check that they track ACoS and TACoS since sales totals alone hide margin problems.
6. Scope fit: Ensure their services fill your gaps, whether that means ads only or full Amazon brand management.
7. Communication cadence: Expect a set rhythm, such as a weekly call, so the decisions do not stall.

Published benchmarks for both metrics are easy to find and easy to misread. An average pulls together products that have different margins, price points, and levels of competition, so the number it produces does not describe anyone in particular. 

What counts as healthy depends on your account: ACoS should sit comfortably below your product’s gross margin, and TACoS should fall as your organic rank improves. You should judge any agency against your own numbers and not against the marketplace average.

How do you check an agency's proof and case studies?

Real proof always names a client, a specific number, a timeframe, and an account you can actually inspect. A wall of logos is not proof, and neither is a claim like “significant growth."

Neither one gives you anything to verify. That is why you should always ask for full case studies with figures you are able to question.

Ekster’s Amazon results, for instance, show $688,406 in annual Amazon profit, which is a number that can be traced line by line, rather than taken on trust.

Work through these case studies for named clients in your category and size, then request an audit of your own account before signing anything. How the agency reads your listings tells you far more than how it presents someone else’s.

What questions should you ask before hiring an Amazon agency?

The six questions below are the ones that separate agencies, because each answer reveals a habit, rather than an intention. Pay attention to vague replies at this stage, as they tend to become vague reporting once the work begins.

1. Who runs my account day to day? A real answer should give you the name of the person responsible and their seniority, not a link to their team page.
2. How do you report profit and ACoS? This shows whether they report against margin or hide behind sales totals.
3. What is your pricing model, and what happens if I cut the spend? This indicator shows whether the fee tracks your budget or stays flat.
4. What is your client retention rate? A high number means that clients stay because the results hold and not because the contract makes leaving difficult.
5. Do you guarantee any part of your management fee? This question reveals if the agency is willing to carry some of your downside risk.
6. How often will we talk? A set cadence, such as a weekly call, keeps the decisions moving instead of waiting on a monthly report.

What are the red flags to avoid?

Some patterns predict a bad engagement, so you should watch for them early. Each of these carries a direct consequence for your accounts.

1. Bait and expand scope: If you hear the words “we’ll start with PPC and add strategy later," it often means the listings and rank drift while you wait.
2. Percentage of spend pricing: This model rewards the agency for spending more of your budget, regardless of whether it pays off.
3. Junior staff on your account: beginner learning on your listings costs you rank and drives up ACoS. 
4. Vanity-metric reporting: Reports that are built on impressions and sales hide margin and TACoS problems.
5. No guarantee or long lock-ins: Without having a money-back guarantee on management fees, all the risk sits with you.
6. TOS-violating tactics: Incentivized reviews or search-find-buy schemes can get your account suspended. The only review program that is worth using is Amazon Vine, which sits inside Amazon’s terms of service. If any agency pushes you toward review manipulation, it puts your entire account at risk.

How we handle agency selection standards at Olifant Digital

Here is how we meet the bar this guide sets.

At Olifant Digital, senior specialists with at least 7 years of experience run your account, and they are in it daily. Pricing is a flat retainer, and it starts at $2,000 a month, adjusted for catalog complexity with no percentage-of-spend fees anywhere in the structure. Every engagement carries a 60-day money-back guarantee on management fees.

You get a weekly call and a dedicated Slack channel. Execution runs on our in-house platform, Olifant AI, and our data scientists review account metrics daily.

The method shows up in the results. Balanced Tiger reached 171% revenue growth alongside a 50% ACoS reduction, and Elite Jumps grew revenue 124% in three months with a 51% lift in conversion rate.

Who should not hire an Amazon agency yet?

An agency is the wrong move for some brands, so be honest about your stage. Hiring too early will waste the retainer and stall the account. This is why it’s essential to fix these fundamentals first.

• Under $100,000 a year on Amazon. The retainer takes too large a share of thin sales, so you should use a freelancer or self-manage until the volume grows.
• Gross margin under 15%: There is no room to fund ads or fees, so fix pricing and cost first.
• A single SKU: For one listing, it’s best to hire a specialist instead of a full team.
• Brand Registry not set up: Brand Registry verifies your brand and also enables A+ Content, so make sure you’re enrolled before hiring.
• Results needed inside 90 days: Rank and margin gains compound over time, so it’s important to set a six-month horizon or to fix the listings yourself first.

Frequently asked questions

Do I need an Amazon agency yet? 

The point where it's clear that you need an agency is when Amazon has outgrown the hours anyone in your business can give it and the account still needs several skills at once, rather than more effort. You don’t need an agency while the listings, images, or pricing still need basic work, since these are fundamentals that an agency will amplify rather than repair. 

Can I switch agencies without losing my rank?

Yes, you can do that without losing your rank if the handover is managed properly. In such a case, your campaign history, keyword data, and account access all stay with you because they live in your Seller Central account rather than with the agency.

Rank tends to slip when an incoming team rebuilds every campaign in the first week instead of reading what is already working. 

This is why you need to ask any agency you are considering about how they approach the first thirty days of an account they did not build and listen for whether the answer starts with learning or with restructuring.

What does an Amazon agency need from me to get started?

There are three things that an Amazon agency needs from you. You need to provide Seller Central or Vendor Central access at the right permission level, your product cost and margin data, and one person who can approve changes without waiting on a committee. 

Margin data is the one most often left out, and it is the main reason some agencies report on sales totals instead of profit. Without this information, no one can tell you whether an ACoS of 25% is healthy for a given product or quietly losing money on every order.

Who owns the campaigns and creative if we part ways?

Everything you build in your Seller Central or Vendor Central account stays with you. This includes campaign structures, keyword history, and listing content. What is worth clarifying before you sign is anything that is created outside the account, such as image assets, A+ Content source files, and external reporting dashboards.

Ask whether those transfer to you, and get the answer in writing; an agency that hesitates here is revealing how it expects the relationship to end.

Conclusion

Choosing an Amazon agency is less about finding the best one and more about finding the one that closes your gap without bending the incentive. It's important to match the model to what your account truly needs, and then look at how the agency gets paid (whether it’s a flat fee or tied to your ad spend), because the latter will just make you spend more.

There are two more checks that separate a good engagement from an expensive one. Ask who runs the account on a daily basis, and expect to hear a name rather than a team page. Insist on reporting that is built around ACoS, TACoS, and margin instead of total sales that flatter everyone who is involved.

Then, do one thing that usually most brands skip, and that’s asking for a site audit of your own account before signing anything. An hour of an agency's thinking tells you more than a year of case studies, and it costs you nothing but the time it takes to read it.

If your Amazon revenue has outgrown one person, and you want senior specialists in your account daily, a flat retainer that does not rise with your ad spend, and a 60-day money-back guarantee behind the work, get your free marketing plan, and we will show you where the margin sits in your account.