Best Amazon PPC Agencies: How We Vet, How They Charge, How to Compare

Finding a good Amazon PPC agency is mostly about filtering out the bad ones. We’ve reviewed 200+ agencies for inclusion in our directory. This page covers how we screen them, what you should expect to pay, and the questions worth asking before you sign anything. The short version: see the vetted list in our partner directory.

Amazon’s ad platform changes often and agency quality varies more than almost any other category of service provider. A good one pays for itself inside a quarter. A bad one quietly burns budget on auto campaigns for six months while sending you a PDF with green arrows on it.

Our vetting criteria

Every agency in the directory clears the same checklist before we list them. Not a marketing checklist. An operational one.

• Amazon Ads verified partner status. Public, checkable, and revoked by Amazon when standards slip. This is the floor, not the ceiling.
• Client tenure. Average client relationship of 12+ months. Short tenure usually means either results aren’t showing up or the agency is churning by design.
• Ad spend under management. We ask for a range, not exact figures. Agencies managing less than $500k/year collectively tend to lack the data exposure to spot patterns quickly.
• Reporting transparency. They report on TACoS, not just ACoS. They show search-term performance, not aggregated campaign totals. They tell you what they changed and why.
• Account ownership. The Seller Central account stays yours. Agency gets user-level access. If an agency wants you to operate inside their master account, that’s a no.
• References we can actually call. Two current clients, one former client. The former client matters more than the current ones.
• Written offboarding terms. 30-day notice, full data export, no “campaigns revert to auto” tricks.

Agencies that pass get listed. Agencies that don’t, don’t. We don’t accept payment for placement. (If you run an agency and want to be considered, the partner application is open.)

Pricing models you’ll see

Three pricing structures dominate the Amazon PPC agency market. Each one creates different incentives, which is what you should pay attention to.

Percent of ad spend (10-20%). The agency bills a percentage of what they spend on your behalf. Simple to understand. The downside: the agency’s incentive is to increase spend, which isn’t always the same as increasing your profit. Works best when paired with a performance floor or cap.

Flat monthly retainer ($1,500-$8,000/mo). A fixed fee regardless of ad spend. Common for mid-market sellers ($20k-$200k/month revenue). Aligns incentives better because the agency only grows revenue by keeping you happy, not by spending more. Retainer size usually scales with catalog complexity and number of marketplaces.

Performance-based (base + share of growth). A smaller base fee plus a percentage of incremental sales or savings above a baseline. Aligns incentives the cleanest but is rare because few agencies want the downside risk. When you find one willing to structure this way, it’s usually a good signal about their confidence.

Hybrid models exist. Spend percentage with a flat floor. Retainer with a performance bonus. The contract language matters more than the label.

For a deeper walkthrough of what agency engagement actually looks like day-to-day, our services hub covers the broader done-for-you landscape.

Where to find the vetted list

Rather than reproduce the agency list on this page (which would go stale), the live directory lives at /partners/. It’s filtered to PPC specialists, sorted by top-rated, and updated when an agency’s status changes.

Each partner profile includes:

• Pricing model and typical engagement size
• Client size range (spend under management)
• Marketplaces covered
• Specialisations (DSP, Sponsored Brands video, new launches, international)
• Two or three verified client outcomes

We don’t publish partner-only commercial terms on profile pages. If you want specifics, the partner contact form routes directly to the agency.

How to compare them

Once you’ve shortlisted three or four agencies, the comparison isn’t really about their pitch decks. It’s about the answers to a handful of specific questions.

• “Walk me through the last account you took over. What did you change in the first 30 days?” Good agencies have a clear structural playbook. Weak ones give you generic answers about “optimising bids.”
• “How do you decide when to launch a new campaign versus tune an existing one?” Tests whether they have a framework or are just reactive.
• “Show me a reporting dashboard from a current client (redacted).” Reveals how they actually communicate results, not how they say they do.
• “What’s your ACoS target logic for a new product launch versus a mature SKU?” Different products warrant different strategies. A one-size answer is a red flag.
• “What happens to the account if we part ways?” Offboarding clarity separates partners from captors.
• “Who specifically will work on the account?” Senior pitch, junior delivery is the oldest trick in agency sales.

If you’re also evaluating software in parallel (some sellers run both an agency and self-serve tooling), our roundup of Amazon product research tools and notes on white-label tools many agencies use are worth a read. A lot of “agency magic” turns out to be three SaaS subscriptions under the hood.

Red flags we screen for

Over 200 agency reviews, a few patterns keep showing up on the ones we reject.

• Guaranteed ACoS numbers. No agency controls conversion rate, competitor behaviour, or Amazon’s auction. Guarantees are a sales tactic, not a commitment.
• “We don’t share account access.” Means the agency has built its business on switching costs, not results.
• Fee structures that don’t flex with catalog changes. Adding 500 SKUs without a scope conversation usually ends badly for one side.
• Heavy reliance on auto campaigns past month two. Auto has its place for discovery. As an ongoing strategy, it’s an admission of not doing the work.
• No written reporting cadence. “We’ll check in regularly” is how agencies end up invisible for a quarter.
• Unclear data ownership. Campaign data, search-term reports, and bid history should be exportable at any time, in your name.
• Pressure to sign for 12+ months up front. Good agencies earn renewal. They don’t trap it.

A standard warning applies: this is research based on public Amazon Ads partner data and our own interviews. It’s not legal or contractual advice. If you’re in a complex enterprise negotiation, get a contract reviewed by someone qualified.

For a broader view of agency-adjacent services including listing optimisation and creative, the agency listing software roundup covers tools that often bundle alongside PPC engagements.

For agencies: applying to the directory

If you run an Amazon PPC agency and want to be considered, the partner application is open year-round. We review quarterly. The screening takes about two weeks and includes reference checks and a live account walk-through with someone on your senior team. We don’t charge for listing. We do remove agencies whose Amazon Ads verification lapses or whose reference feedback turns negative.

The partner directory is the single source of truth. Browse the current list of vetted PPC agencies and filter by spend size, specialisation, or marketplace.

Ready to find your agency? Browse the vetted Amazon PPC partner directory, filter by your spend size and specialisation, and contact two or three for scoped proposals. It takes about 20 minutes and saves you the 200+ agency comparison we already ran.