Hiring an Amazon Agency: The Complete Guide for Brand Owners

Hiring an Amazon agency is a decision most brand owners get to the same way: something on the account has been broken or stalled for months, the internal fixes haven’t worked, and the cost of continuing to manage it yourself has quietly passed the cost of paying someone else to do it properly.

This guide covers the whole decision, not just the sales pitch version of it. When it’s actually time to hire (and when it isn’t). What the agency landscape looks like and which type fits which problem. How to run an evaluation that filters out the pretenders. What pricing models mean for incentives. The red flags that predict a bad engagement. And what a competent first 30 days looks like, so you know whether you hired well within a month instead of a year.

Below this page you’ll find the individual guides in this series. Each goes deeper on one stage of the decision.

When Hiring an Amazon Agency Makes Sense: The Trigger Points

Nobody hires an agency because things are going well. But “things feel hard” is not a trigger. These are:

• Your ads have been unprofitable for 60+ days and you can’t explain why. Not one bad month — a sustained ACoS above your break-even margin that survives your own optimization attempts.
• Revenue has plateaued while the category grows. Check Product Opportunity Explorer or Jungle Scout category data. If the niche is up 15% year over year and you’re flat, you’re losing share, not holding steady.
• You (or your best operator) spend 15+ hours a week inside Seller Central on bid changes, case logs, restock math, and suppressed-listing whack-a-mole. That’s a part-time job priced at founder rates.
• Account health issues you don’t know how to clear — an Account Health Rating drifting toward the red zone, policy warnings sitting unanswered, or an intellectual property complaint you’re afraid to touch.
• Obvious growth levers sitting untouched — international marketplaces, a second product line, DSP, Subscribe & Save — because nobody has the bandwidth to execute them.

If two or more of those describe your account, work through the full checklist in the 7 signs you need an Amazon agency. It puts concrete thresholds on each trigger so you’re deciding from data instead of frustration.

And if you’re on the fence about whether the math works at all — whether an agency fee can actually pay for itself at your revenue level — start with is an Amazon agency worth it, which walks through the ROI calculation honestly, including the scenarios where the answer is no.

The Agency Landscape: Who Does What

“Amazon agency” covers at least four different businesses. Hiring the wrong type is the most common mistake we see, and it’s usually not the buyer’s fault — most agencies describe themselves identically.

Full-service agencies run the whole account: PPC, listings, inventory planning, case management, compliance, brand strategy. This is the right model when your problems span multiple systems — which they usually do, because Amazon problems compound. A conversion problem inflates your ACoS. A stockout tanks your organic rank, which raises your cost per acquisition, which breaks your ad economics. Full-service Amazon management exists because these systems can’t be optimized in isolation.

PPC-only agencies manage advertising and nothing else. This is the right choice when advertising is genuinely your bottleneck — your listings convert well, operations are clean, and you specifically need better campaign architecture, bid strategy, and search term discipline. It’s the wrong choice when your listing converts at 8% against a category average of 15%. No PPC agency can fix that, and an honest one will tell you so before taking your money.

Compliance and reinstatement specialists handle suspensions, ASIN reinstatements, IP complaints, and regulated-product issues. When your account is suspended, you don’t need a growth agency — you need someone who has written hundreds of Plans of Action and knows what Seller Performance actually accepts. Some full-service agencies (including us) run this as a dedicated practice; many don’t, and you should ask.

Creative and content shops produce photography, A+ Content, storefronts, and video. Useful as a supplement, but they don’t manage performance, so don’t expect them to move your numbers alone.

There’s also the question of whether you need an agency at all versus a freelancer or software. A skilled freelancer can be excellent for a single-channel problem at lower cost; software like Perpetua or Scale Insights can automate bids but can’t build strategy. If you’re weighing those paths, the comparison pages on agency vs freelancer and agency vs software break down where each one wins.

The deeper structural question — hire an agency or build the capability in-house — deserves its own analysis. Amazon agency vs in-house runs the real numbers: what a competent in-house hire costs fully loaded, how long they take to become effective, what happens when they leave, and the revenue thresholds where each model wins.

How to Evaluate Agencies

Most brands evaluate agencies by talking to three of them and picking whoever sounded most confident. That process selects for sales ability, not operating ability. A better process looks like this:

Step 1: Define the problem before the first call. Write down your current TACoS, conversion rate by top ASIN, Account Health Rating, and the three metrics you’d need moved to call the engagement a success. If you can’t articulate the problem, every agency pitch will sound equally plausible.

Step 2: Ask for a real audit, not a proposal. A serious agency will look at your actual account — or at minimum your category and your listings — before quoting you. Anyone who quotes a price before seeing your data is selling a package, not a solution.

Step 3: Interrogate the audit. The audit itself is the best evaluation tool you have. Does it contain specific findings (“your broad match campaigns spent $4,200 last quarter on search terms with zero orders”) or generic observations (“there’s opportunity to improve your keyword targeting”)? Specificity is the tell.

Step 4: Meet the people who’ll actually run your account. The person who sold you is almost never the person doing the work. Ask directly: who touches my account weekly, how many accounts do they manage, and what happens if they leave?

Step 5: Check references in your revenue band and category type. An agency that’s brilliant with $10M supplement brands may be lost on a $700K industrial B2B catalog. Ask for references that look like you.

Questions worth asking in every evaluation:

The full step-by-step process, including scoring criteria and the questions that expose weak agencies fastest, is in how to evaluate Amazon agencies. If you want it in a form you can take into calls, download the Amazon agency evaluation checklist — it’s the scoresheet version of this entire guide.

What It Costs: Pricing Models and What They Incentivize

Agency pricing isn’t just a number — the model shapes behavior. Here’s the landscape:

Flat monthly retainer. Most common for full-service work. Typical range: $3,000–$10,000/month depending on catalog size, revenue, and scope. Predictable for you; the incentive risk is complacency, which is why retainers should come with defined deliverables and KPI reviews.

Percentage of revenue. Usually 3–8% of Amazon revenue, sometimes with a retainer floor. Aligns the agency with growth, but be careful: revenue percentage rewards top-line growth even when it’s unprofitable. An agency paid on revenue has no built-in reason to care about your margins.

Percentage of ad spend. Standard for PPC-only management, typically 10–15% of monthly spend, often with a minimum. The obvious conflict: the agency earns more when you spend more. Reasonable agencies manage this with TACoS targets in the contract; bad ones just let budgets drift upward.

Hybrid models. A smaller retainer plus a performance component (revenue share above a baseline, or bonus tied to TACoS targets). Often the healthiest incentive structure, and increasingly the norm for larger engagements.

Project pricing. For bounded work — a listing overhaul, a suspension appeal, an international marketplace launch. Compliance work in particular is usually project-priced: expect $2,500+ for a straightforward appeal and considerably more for regulated-product reinstatements.

Rules of thumb: below roughly $30K/month in Amazon revenue, full-service retainers are hard to justify — the fee eats the margin the agency creates. Between $30K and $100K/month, PPC-only or scoped engagements usually pencil first. Above $100K/month, the cost of amateur management almost always exceeds the cost of professional management.

A worked example makes the math concrete. Say you’re doing $150K/month on Amazon at a 25% pre-ad margin, with a TACoS of 22%. A full-service agency at $6,000/month needs to find you $6,000 in monthly value to break even. Cutting TACoS from 22% to 17% — a realistic 90-day outcome on an account with typical waste — is worth $7,500/month by itself, before counting conversion gains from listing work, recovered FBA reimbursements, or the founder hours returned. The same agency on a $25K/month account has to move mountains to cover its own fee. That’s the whole pricing question in one paragraph: agency fees are roughly fixed, but agency value scales with your revenue.

Also ask what’s not included. Creative production (photography, video), DSP ad spend minimums, and international marketplace fees are commonly billed separately. A $4,500 retainer that excludes creative can cost more in practice than a $6,000 retainer that includes it. Get scope in writing before comparing prices.

The complete breakdown — what each model costs at each revenue tier, what’s typically included, and the contract terms that matter — is in Amazon agency pricing.

Red Flags That Predict a Bad Engagement

Some warning signs are visible before you sign. In rough order of how reliably they predict a bad outcome:

Guaranteed results. Nobody controls Amazon. An agency guaranteeing page one rankings or a specific ACoS is either lying or planning to hit the number in ways that hurt you (slashing spend to make ACoS look good while revenue falls).

Price before audit. If they quoted you without looking at your account, you’re buying a package. Packages are built for the agency’s margins, not your problems.

Shared login requests. Any agency asking for your Seller Central password instead of a User Permissions invite either doesn’t know Amazon’s security norms or doesn’t care. Both are disqualifying.

No named account team. “Our team will handle it” means offshore generalists juggling 40 accounts. Ask who, specifically, and how many other accounts they carry.

Reporting that hides TACoS. Agencies that report ACoS but never total sales, or ad revenue but never profitability, are choosing metrics that flatter them. You want spend, total revenue, TACoS, and organic rank trend in every report.

12-month lock-ins with no exit clause. Long contracts protect agencies from accountability. Reasonable minimums exist (structural work takes 90 days to pay off), but a full-year lock with no performance out is a tell.

They badmouth every previous agency’s work without evidence. “Whoever built this had no idea what they were doing” is a sales tactic. A professional shows you the specific problems in the data.

The extended list — including the subtler flags that only show up mid-engagement and how to write contracts that protect you — is in Amazon agency red flags.

What a Good First 30 Days Looks Like

You can tell whether you hired well within 30 days. Here’s the sequence a competent agency runs:

Days 1–5: Access and baseline. User Permissions set up correctly (named users, appropriate permission tiers — not your login). Baseline metrics captured and shared in writing: TACoS, ACoS by campaign type, conversion rate by top ASIN, Account Health Rating, IPI score, current organic rank on priority keywords. If nobody writes the baseline down, nobody can be held to improving it.

Days 5–14: The audit. A written document with specific findings and dollar figures. Wasted ad spend identified by campaign and search term. Listing gaps scored against category leaders. Suppressed or at-risk ASINs flagged. Unclaimed FBA reimbursements estimated. Compliance exposure noted. This document should teach you things about your own account.

Days 14–30: First structural fixes shipped. Not “strategy finalized” — shipped. Typically: negative keywords added and wasted spend cut (the fastest win on most accounts), campaign restructuring begun, the worst listing problems corrected, open case log triaged. You should see the wasted-spend line move before day 30 even though headline TACoS takes 60–90 days.

Day 30: The first real review. A call that covers what was found, what was fixed, what’s next, and — critically — what the agency got wrong or found harder than expected. Candor in the first review predicts candor for the whole engagement.

What you should not see in month one: a big revenue jump (be suspicious if promised), a dashboard with no narrative, or silence between the kickoff call and the day-30 report.

Onboarding is also where you set the operating rhythm: weekly written updates, monthly strategy calls, a shared channel for urgent issues (suppressions and account health flags can’t wait for Friday’s email), and a standing agreement on what the agency can change without asking versus what needs your sign-off. Get specific on the last one. Bid changes and negative keywords should never require your approval — that’s the work you’re paying for. Price changes, title rewrites, and anything touching Brand Registry should. Ambiguity here is where most agency relationships fray: either the agency moves too slowly because everything waits on you, or it moves too fast and you discover your hero ASIN’s title changed on a Tuesday.

One more onboarding item most brands skip: agree on the measurement window up front. Structural PPC work makes metrics look worse before better — restructured campaigns reset their conversion data, and Amazon’s attribution lags actual behavior by days. A fair evaluation point for the engagement is day 90, with day 30 and day 60 checkpoints against the written baseline. Agencies that resist writing the baseline down, and clients who judge week two like it’s a verdict, both set the engagement up to fail.

Where to Go From Here

If you’re early in the decision, start with the signs it’s time to hire and whether an agency is worth it at your revenue level. If you’ve decided to hire and are comparing options, go straight to the evaluation process, pricing, and red flags, with the evaluation checklist open during every call. If you’re weighing building the capability yourself instead, agency vs in-house is the honest comparison.

And yes — Altus Commerce is a full-service Amazon agency, so we’re not a neutral party in this guide. We’ve tried to earn your trust the only way that works with an audience that’s been inside Seller Central for years: by telling you the parts that don’t favor us, including when not to hire anyone at all. If your situation looks like one where full-service management genuinely fits, we’re happy to start the way every agency should — with an audit of your actual account, before anyone talks price.