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

How to choose an Amazon agency comes down to 5 checks: match the agency’s model to the gap in your account, then vet it on proof, pricing model, staffing seniority, and reporting. Before you sign, ask for an audit of your own account, because how an agency reads your listings tells you more than any case study.

An Amazon agency is a company that runs your Seller Central or Vendor Central account, covering strategy, PPC, SEO, listings, and profit tracking. Seller Central is where you sell directly to shoppers, whereas Vendor Central is where you sell wholesale as a supplier.

The right agency closes the specific gap in your account. The wrong one quietly spends your budget while the total sales still look fine.

We manage more than $100 million in annual client revenue across 50+ brands, and 98% of our clients stay with us.

This is why in this guide, we give you the full vetting method, including the agency types, the pricing models and the incentives hiding inside them, the questions worth asking on a sales call, the red flags that predict a bad engagement, and the point at which you should not hire an agency at all.

TL;DR

• Match the model to your gap. Use a PPC-only agency when ads are your only gap. Our rule of thumb: go full-service once Amazon passes $1,000,000 a year.

• Tie the fee to scope. Ask what the fee covers and what happens to it when your spend or catalog changes. A fee you can explain beats a low headline price.

• Count the full hiring cost. Benefits are 30.0% of private-industry employer costs, according to the Bureau of Labor Statistics.

• Demand proof you can trace. Ask for a named client, a number, and a timeframe, such as $688,406 in annual Amazon profit for Ekster.

• Wait if sales or margin are thin. Our rule of thumb: if you sell under $100,000 a year on Amazon or run under 15% gross margin, fix fundamentals first.

Why the stakes are higher in 2026

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

According to Amazon’s Q2 2026 results, third-party sellers accounted for 61% of worldwide paid units, and advertising services revenue reached $19.8 billion, up 26% year over year. That ad growth reflects more sellers bidding on the same keywords, which pushes up the cost of visibility.

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. In our experience, 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 4 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: no model is wrong on its own. What matters is that the fee follows the real workload (catalog size, marketplaces, ad spend managed) and that the agency reports profit, not just sales. Ask every agency what happens to the fee if you cut spend by half, and what happens to your margin if they double it.

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.

According to the Bureau of Labor Statistics, wages make up 70.0% of private-industry employer costs and benefits make up the remaining 30.0%. Using that private-industry average, fully loaded cost is roughly base salary ÷ 0.70. A $90,000 salary becomes about $128,571 a year before software, recruiting, and management overhead.

Compare that with an agency fee. At Olifant Digital, services start from $2,000 per month, or $24,000 a year, and are custom for each project based on the complexity and workload required. At that starting price, the in-house hire costs $104,571 more each year, and you get a team instead of one person.

Even the $128,571 figure leaves things out. According to SHRM's 2026 recruiting benchmarks, the median time to fill a nonexecutive role is 39 calendar days, and that is before onboarding and ramp-up. If that hire later leaves, the cycle starts again, and 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 2 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 so you can verify the results before you trust them.

2. Pricing-model fit: The fee should follow scope and workload, and the agency should be able to explain it in one sentence.

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. Judge any agency against your own numbers.

The agency scorecard

Score every agency on the same 8 points, 1 (weak) to 3 (excellent). An agency below 18 out of 24 is a risk; below 14, keep looking.

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 and a claim like “significant growth” give you nothing 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, a number you can trace line by line.

Amazon Ads verified and advanced partner badges reward demonstrated expertise, and Amazon Ads frames that status as a data point in your selection process. Confirm any claimed badge in the Amazon Ads partner directory, then weigh it below named results.

From our accounts: when we take over an account, the audit decides the first 90 days. In 10 of the last 15 accounts we audited, the brand had no break-even ACoS set for its products, and in all 11 accounts where we checked, between 10% and 68% of ad sales went to a sibling SKU instead of the advertised product. An agency that can't find problems like these in your account before you sign probably won't find them after.

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?

Ask every agency these 10 questions on the first call. Vague answers at this stage tend to become vague reporting once the work begins.

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. Pricing nobody can explain: If the fee changes and the agency can't tie it to scope or workload, you are paying for something you can't measure.

3. Junior staff on your account: Juniors learning on your listings cost you rank and drive 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: Long contracts with no performance guarantee leave all the risk with you.

6. TOS-violating tactics: Incentivized reviews or search-find-buy schemes violate Amazon’s policies. Amazon’s Community Guidelines prohibit exchanging free products or compensation for reviews, and Amazon Vine is the program Amazon provides for that purpose. 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 handle daily Amazon PPC management inside it. Every product gets its own plan with a target TACoS, target ACoS, keywords to rank for, and a profit goal, tracked daily at the SKU level, and PPC campaigns are built on the 1-1-1-1 Scaling Method.

Our services start from $2,000 per month and are custom for each project, based on the complexity and workload required. Contracts are month to month, and every engagement comes with our 60-day guarantee: if we don't improve your performance, you don't pay.

You get a weekly call and a dedicated Slack channel. Our in-house platform, Olifant AI, analyzes every account daily and flags spend, budget and scaling decisions against each brand's profit margin target, so our senior specialists act the same day.

Olifant Digital is listed #1 on Clutch's Top Amazon Marketing Agencies list (October 2026), rated 5.0 from 20 verified reviews.

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 3 months with a 51% lift in conversion rate. Year over year (January to September 2026 vs 2025), Dreamfarm UK +328%, Eye on Ball +113%, BenchFoods +84%, Purist Company +70%, Novalogy (US) +66%, Dreamfarm US +45%.

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. The thresholds below are our own rule of thumb.

• 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, hire a single specialist.

• Brand Registry not set up: Amazon’s Brand Registry requirements include a pending or registered trademark, and enrollment unlocks A+ Content and Amazon Vine, so enroll before hiring.

• Results needed inside 90 days: Rank and margin gains compound over time, so it’s important to set a 6-month horizon or to fix the listings yourself first.

Key takeaways

• Fit the agency model to the gap in your account: PPC-only covers ads alone, and in our experience, full-service fits brands above $1,000,000 a year on Amazon.

• Read the incentive before the price: the fee should follow scope and workload, and reporting should be built on profit.

• Based on Bureau of Labor Statistics data, an in-house hire costs about salary ÷ 0.70, so a $90,000 salary runs about $128,571 a year.

• Trust results you can trace to a named client, a number, and a timeframe, such as Ekster’s $688,406 in annual Amazon profit.

• Our rule of thumb: brands under $100,000 a year on Amazon or below 15% gross margin should fix pricing, cost, and listings before paying a retainer.

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 needs several skills at once. You don’t need an agency while the listings, images, or pricing still need basic work: these are fundamentals an agency amplifies, so fix them first.

Can I switch agencies without losing my rank?

Yes, you can do that without losing your rank if the handover is managed properly. Your campaigns sit in accounts you own: Amazon Ads' manager account guide states that "the advertiser fully owns their own account," and you can remove an agency's access at any time.

Rank tends to slip when an incoming team rebuilds every campaign in the first week without reading what already works.

From our accounts: Dreamfarm and Eleva Nutrition both switched to us from another setup. Dreamfarm's Amazon US growth went from 41% to 60% a year after we took over, and Eleva's growth went from 8% to 16% while its margin went from 19% to 23.8%. Neither account was rebuilt in week one.

This is why you need to ask any agency you are considering about how they approach the first 30 days of an account they did not build and listen for whether the answer starts with learning or with restructuring.

How long until an Amazon agency shows results?

Expect the first month to go into the audit, data collection and fixes to listings and campaign structure. Early wins in ACoS and wasted spend usually show in months 2 and 3. Rank and revenue gains build from months 4 to 6, because organic rank follows sustained sales. Judge an agency at 90 days on the direction of TACoS and profit, and at 6 months on revenue.

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

There are 3 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 alone. 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?

Campaigns and listings built in your own Seller Central, Vendor Central, and Amazon Ads accounts remain in accounts you own. 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.

Are Amazon agencies worth the cost?

An Amazon agency is worth the cost when its fee is smaller than the margin it recovers or adds to your account. Weigh that fee against a fully loaded in-house hire, which costs more than its salary once benefits are added. At Olifant Digital, services start from $2,000 per month and are custom for each project, based on the complexity and workload required, with a 60-day guarantee: if we don't improve your performance, you don't pay. Contracts are month to month.

What services should a full-service Amazon agency cover?

A full-service Amazon agency should cover strategy, daily PPC, Amazon SEO and listing optimization, and A+ Content. It should also run creative, account health and catalog operations, and profit tracking at the SKU level.

A PPC-only agency covers ads alone, so the rest of that list stays with you. Check the scope in writing before you compare prices.

Conclusion

Choosing an Amazon agency means 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 and whether the fee follows the work it actually does.

There are 2 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. Insist on reporting that is built around ACoS, TACoS, and margin.

Then, do one thing that usually most brands skip, and that’s asking for an audit of your own Amazon 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, month-to-month terms and a 60-day guarantee behind the work, get your free marketing plan, and we will show you where the margin sits in your account.