Search for the best Amazon advertising agencies and you will find a dozen listicles with the same names in a different order, most of them sponsored. They are not useless, but they tell you who has a marketing budget, not who will run your account well.
This post takes a different route. It sorts agencies into the four types that actually exist, describes what the good ones in each type do that the rest do not, and gives you the questions that separate them before you sign. If you are still deciding whether an agency is the right move at all, start with the agency versus software decision.
The four types of Amazon agency
Full-service Amazon agencies
These handle everything on the marketplace: listings, A+ content, brand store, inventory strategy, customer service, and advertising. Ads are one department. The upside is that someone is looking at the whole picture, and ads problems that are really listing problems get caught. The downside is that the ads work can be shallower than at a specialist, because the account manager is covering more ground.
Best for: brands that want a single partner for the marketplace and have enough scale to justify a full team.
PPC specialists
Agencies that only do Amazon advertising. Deeper on campaign structure, bidding, and the console's reporting. Usually more opinionated about how accounts should be built. They tend to be strongest for sellers whose listings are already solid and whose problem is purely on the ads side.
Best for: sellers with good listings and messy or underperforming ads.
Boutique consultants
One person or a very small team, often former in-house advertisers or former agency staff. Fewer clients, more attention per account, and usually more flexible about scope: a one-time restructure, a quarterly audit, or a few hours of advice rather than a retainer. Less process, more judgment.
Best for: sellers who want expertise on call without a full management arrangement, or who need a specific project done well.
Tech-led agencies
Agencies built around their own software platform, where the service is partly an onboarding and management layer on the tool. The execution is consistent because it is automated. The question is whether the tool's approach fits your account, and what happens to the account if you leave.
Best for: sellers comfortable adopting the agency's system and structure in exchange for consistent daily execution.
What the best ones do differently
Across all four types, the agencies that consistently run accounts well share a short list of habits. These are the things to look for.
They separate judgment from execution. The account manager's time goes to structure, strategy, and listings. The daily bid, budget, and schedule work runs on tools. Agencies that do everything by hand either cannot scale or are charging you for hours that a rule could cover. This breakdown of what a management service actually does explains why that split matters.
They show their work. A change log with dates and reasons, available on request, is the clearest signal that an account is actively managed. The best agencies volunteer it. The rest send a monthly chart.
They tell you when the ads are not the problem. A low conversion rate, weak reviews, a price out of line with the category, a main image that does not read in search results. A good agency says so in the first month rather than spending your budget into a listing that cannot convert it.
They build accounts someone else could maintain. Clear naming, isolated campaigns, documented structure. If you leave, you keep an account you understand. If the structure only makes sense to the agency, that is a lock-in dressed as a method.
They handle the hours between visits. Overnight waste, event ramps and restores, budgets that cap out by noon. An agency that reviews your account on Thursdays has to have an answer for the other six days. The good ones run dayparting and budget rules across their client accounts so nothing drifts between sessions.
Questions that sort them quickly
What tools do you run on client accounts, and what do your people spend their time on? A clear answer tells you the agency has thought about this. A vague one usually means everything is manual and batched.
Can I see a change log from an account you manage, with the client's details removed? The ones who can produce it have one.
How do you handle scheduling? If the answer is that Amazon ads run all day, the agency is leaving one of the largest and simplest ACoS improvements on the table.
What happens to the account structure if we part ways? You want to hear that everything is in your console, named sensibly, and documented.
How is pricing structured as spend grows? Percentage-of-spend models mean the agency is paid more when you spend more, which is not always aligned with you spending well. Flat or tiered retainers are easier to evaluate. This post on agency pricing covers the models.
Who specifically will work on my account, and how many other accounts do they manage? The answer sets your expectations for attention.
Red flags, briefly
Guaranteed ACoS numbers before seeing your account. Reports that are mostly charts and rarely specific changes. Reluctance to give you owner-level console access. A structure you are told not to touch. A first call that never mentions your listing. The full list of red flags is its own post.
Agencies and software are not opposites
The best agencies already run software. The question for a seller is not agency or software; it is whether you want the agency to run the software for you, or whether you would rather run it yourself and bring in an agency or consultant for the parts that need a person. For many sellers, especially those with structured accounts and limited budgets, the second arrangement gets most of the value at a fraction of the cost.
Frequently asked questions
How do I find a good Amazon advertising agency?
Referrals from sellers in your category beat any ranking list. Beyond that, look for agencies that will show you a change log from an existing client, that run software for the daily work rather than doing it by hand, and that talk about your listing and margin in the first call rather than only your ACoS.
What should an Amazon PPC agency cost?
Structures vary: flat retainers, a percentage of ad spend, or a mix, and sometimes a setup fee for restructuring. The right comparison is against what the same work costs done another way. Daily execution is far cheaper as software; strategy and restructuring are where paying for expertise makes sense.
Do the best Amazon agencies use automation software?
Almost all of them. Manual bid and schedule management does not scale across client accounts, so the better agencies run rule engines or bid platforms internally and spend their people's time on structure, strategy, and listings. An agency that does everything by hand is either very small or very expensive.
Off Hours is the rule engine many agencies run under the hood, and the one sellers run themselves when they want the daily execution without the retainer. Start a free 14-day trial.