Amazon Advertising Agency Mistakes: Red Flags Before You Hire

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Amazon Advertising Agency Mistakes: Red Flags, Questions, and FAQs Before You Hire

Last updated on

October 9, 2026

Author:

Mamta Mathe

A good Amazon advertising agency should help you keep control of your account. It should explain how its fees work, show more than just ACoS in reports, connect ads with your listings and retail readiness, and clearly explain what happens if you stop working with them.

The biggest mistake is hiring an agency before these things are clearly written down.

This guide is not a ranked list of agencies. It is also not a full Amazon Ads guide. It is a checklist for sellers, vendors, hybrid 1P/3P brands, founders, and marketplace leaders who want to avoid costly mistakes before giving access, signing a contract, or judging results too early.

The biggest mistake is hiring an ads agency before defining what “good” means

The biggest mistake is starting with the agency’s sales pitch instead of your own goal.

Before you compare proposals, decide what the agency should improve, what it should protect, and how your team will measure the work.

On Amazon, “good” is measured by more than just one ad metric. A lower ACoS could be a good thing, but you could also be losing overall sales. Your budget could also skew too far towards branded terms, or the profitable ASINs could lose visibility.

A higher ACoS is not always bad either. During a product launch, it may make sense if the spend supports a clear growth goal and the product margin can handle the test.

Before you sign, write down these five things:

What to define before signing

What to define	Why it matters
Business goal	So everyone knows what success means.
Campaign scope	So you know what the agency will manage.
Account ownership rules	So your brand keeps control of access and data.
Reporting format	So reports show useful decisions, not just numbers.
30/60/90-day review process	So you judge progress at the right time.

This simple step helps you avoid choosing an agency only because it has the lowest fee, the best pitch deck, or a promised metric that may not match your real profit goal.

A strong agency should explain how Sponsored Ads, retail readiness, inventory, pricing, conversion rate, and profit work together. Amazon Ads also tells advertisers to set campaign goals and key performance indicators before judging results.

Mistake 1: Treating Amazon advertising as bid management only

Amazon advertising is not only about changing bids. Bids matter, but they are only one part of the full system.

That system includes targeting, budgets, search terms, placements, creative, retail readiness, product economics, and account goals.

Sponsored Products are cost-per-click ads that promote individual product listings. They can help a brand reach shoppers who are searching for related keywords or viewing similar products.

But even a strong campaign can waste money if the product listing has weak images, poor reviews, stock issues, price gaps, or a Buy Box problem.

A responsible agency should explain which parts of the advertising system it will manage and which parts need help from your internal team.

This may include Sponsored Products, Sponsored Brands, Sponsored Display, Sponsored TV, and Amazon DSP when they are relevant.

It may also include working with the teams that manage listings, catalog, inventory, and pricing.

If a proposal only talks about lowering bids, adding keywords, or “optimizing campaigns,” ask what happens when the real issue is conversion.

A stronger Amazon PPC agency conversation should connect PPC work to ASIN readiness, search-term quality, budget pacing, and product-level profit.

Mistake 2: Letting the agency own your account access, data, or campaign history

Your brand should own Seller Central, Vendor Central, the Amazon Ads console, billing, dashboards, campaign history, and reporting files.

The agency should get the right permissions to do the work. It should not become the main or permanent owner of your account or data.

Amazon’s Seller Central help explains a service provider as a third party you give access to your Seller Central account. Use Seller Central service provider access guidance as a current reference. But do not depend on one screenshot or workflow because Amazon access paths can change.

The best setup is simple.

Your business should own the account, and the agency should only have the access it needs to do its work. Your contract should also explain how the agency will return access, reports, files, and campaign history if you stop working together.

Account ownership checklist

Asset	Brand should own	Agency can manage	Red flag to question
Seller Central / Vendor Central	Primary account, admin control, billing relationship, and business records.	Scoped user or service-provider permissions for agreed tasks.	Agency asks for your primary login or says access cannot be removed.
Amazon Ads console	Advertiser account, campaign history, billing, and exportable data.	Campaign setup, targeting, bids, budgets, and optimizations.	Campaigns are built in an account the brand cannot access.
Dashboards and reports	Final reporting files, definitions, and performance history.	Dashboard setup, analysis, and regular commentary.	Reports disappear or become unusable if you leave.
Creative and reporting assets	Approved creative, naming rules, exports, and documentation.	Production, organization, and performance tagging.	No handover process for files, naming logic, or test history.
API or partner access	Approval of who can access data and why.	Use of approved integrations and tools for agreed work.	No explanation of data controls, security, or how to remove access.

Mistake 3: Comparing fees without comparing scope, incentives, and exit terms

Don’t compare agency fees based only on the monthly price.

A lower fee can still cost more if the scope is too limited, reporting is weak, or the agency earns more as spend rises without tying that spend to profit.

Common fee models include flat retainers, percentage of ad spend, hybrid retainers, project audits, and consulting engagements.

None of these models is always better. The right model depends on your catalog size, ad spend, retail readiness, reporting needs, DSP or AMC complexity, and how much senior strategy is included.

Use this simple example as an incentive check only.

If monthly ad spend is $50,000 and the agency charges 15% of spend, the management fee is $7,500. Under a $3,000 flat retainer, the same spend level creates a different incentive.

This does not mean one model is good and the other is bad.

It means the buyer must understand scope, minimums, performance expectations, and exit terms.

For more pricing context, compare the proposal with a dedicated guide to Amazon PPC management cost and agency fees instead of turning this article into a full fee guide.

Fee model questions

Fee model	What to clarify	Potential risk	Question to ask
Flat retainer	Included hours, seniority, cadence, and deliverables.	Low fee may exclude strategy, reporting, or cross-functional work.	What exactly is included each month, and what costs extra?
Percentage of spend	Rate, spend basis, minimum fee, and budget control.	Agency may benefit when spend rises, even if profit does not.	How do you decide when spend should increase or decrease?
Hybrid	Base fee, variable fee, and success logic.	Complex terms can hide incentives or minimums.	Which part of the fee changes, and which metric controls that change?
Project or audit	Scope, output, implementation support, and timeline.	Findings may not turn into execution.	Who implements the fixes after the audit?
Consulting	Advice cadence, owner responsibilities, and decision rights.	Brand may still need internal execution capacity.	What must our team own between calls?

Mistake 4: Accepting reports that stop at ACoS or ROAS

ACoS and ROAS matter, but they don’t show the full picture on their own.

A useful report should explain what changed, why it changed, what decision comes next, and how the ad result connects to total Amazon performance.

Amazon explains Sponsored Products costs through a cost-per-click model. This means advertisers pay when shoppers click. Amazon Ads also uses metrics like ACoS, CPC, CTR, and budget control in its Amazon Ads FAQ.

These metrics are useful. But when you are hiring or reviewing an agency, you need more than screenshots from the ads console.

Ask the agency to separate result metrics from activity metrics.

Sales, contribution margin, TACoS, ACoS, conversion rate, account-health issues, case status, reduced ad waste, completed listing changes, and inventory risks all answer different questions.

A stronger Amazon Ads reporting process should turn the numbers into decisions. It should not only summarize what happened last month.

Reporting metrics to review

Metric or view	What it shows	What it can miss	Decision it should support
ACoS	Ad spend divided by attributed ad sales.	Total sales impact, branded mix, and product margin.	Whether spend is efficient for that ASIN and goal.
ROAS	Attributed ad sales divided by ad spend.	Profit after fees, COGS, and agency costs.	Whether return is strong enough for the margin structure.
TACoS	Ad spend compared with total Amazon sales.	Channel mix and profit unless paired with margin.	Whether ads support total growth or only paid sales.
CVR	How often clicks turn into orders.	Traffic quality unless paired with search terms.	Whether the issue is traffic, listing, price, or offer.
Wasted spend	Spend on irrelevant, weak, or non-converting queries.	New-launch learning periods if judged too early.	Which terms, placements, or campaigns need pruning.
Branded vs non-branded	How much spend protects brand demand versus finds new demand.	Incrementality unless measured carefully.	Whether the agency is growing reach or only using existing demand.
SKU profitability	Performance by product economics.	Brand-level averages can hide weak ASINs.	Which products need more budget, less budget, or retail fixes.

Mistake 5: Hiring an agency before your listings, pricing, inventory, and Buy Box are ready

An agency cannot fix every problem with ads.

If your product listings don’t convert well, you run out of stock, your prices are too high, or your product doesn’t have the Featured Offer (Buy Box), Increasing ad spend may lead to more clicks without enough additional sales.

Before increasing your ad budget, check the basics:

Product title
Images
A+ Content
Customer reviews
Pricing
Stock availability
Fulfillment setup
Buy Box or Featured Offer eligibility
Category compliance

These things affect whether shoppers actually buy your product after clicking your ad.

This does not mean everything has to be perfect before you start advertising. It simply means the agency should find out which problems are stopping growth and which ones can be improved while the campaigns are running.

A good agency will know the difference between money wasted because of poor campaigns and money wasted because the product is not retail-ready before asking you to spend more.

If your ads get clicks but sales are low, check your images, price, reviews, and product offer before adding more keywords.
If your ads stop showing, check your eligibility, stock, budget, billing, and campaign status before blaming your bidding strategy.
If your ACoS goes up during a product launch, compare it with your launch goals, search-term learning, profit margin, and overall sales trend before deciding if it’s a problem.

Mistake 6: Expecting instant ACoS improvement without enough data or a learning window

Fast audit findings can happen quickly. But long-term performance improvement usually needs enough data, a clean campaign structure, careful testing, and retail readiness.

If you judge an agency too early, you may make the wrong decision.

In the first month, a strong agency may find wasted spend, duplicate campaigns, weak naming logic, missing negatives, budget leaks, or retail blockers.

That is useful progress. But it may not show as a stable ACoS improvement right away.

Seasonality, stock, reviews, competitor pricing, and category demand can also affect the trend.

30/60/90-day review window

Window	Reasonable focus	What not to overread
First 30 days	Audit structure, access, tracking, naming, search terms, budget pacing, and retail blockers.	Do not treat one short period as proof of long-term performance.
Days 31–60	Clean up waste, test targeting, improve placements, separate branded and non-branded demand, and watch conversion signals.	Do not compare results without checking catalog, stock, pricing, and seasonality changes.
Days 61–90	Review trend quality, TACoS, ACoS, CVR, SKU profitability, and whether the agency is learning from data.	Do not accept activity reports without clear decisions and next actions.

The better question is not, “Did ACoS drop immediately?”

The better question is, “What did we learn, what changed, and which decision is supported by enough data?”

Agency vs in-house: when each model makes sense

An agency is not always the best choice. In-house is not always cheaper either.

The right choice depends on complexity, internal capacity, speed, reporting needs, and how closely ads need to connect with catalog, creative, inventory, and finance.

Choose the model that gives your brand enough control and enough expertise.

If your internal team can manage daily execution, understand Amazon Ads, and connect the work to retail operations, in-house may work well.

If the work crosses PPC, DSP, retail readiness, reporting, and strategy, outsourcing Amazon PPC may give the team better coverage.

Operating model comparison

Model	Best fit	Risk to manage	Question before choosing
Agency	Brands that need cross-functional Amazon ads execution, reporting, and strategy.	Scope may be unclear if the contract is vague.	Who owns each task, and who makes final decisions?
In-house hire	Brands that need daily control and can support the role.	One person may not cover strategy, execution, reporting, and retail issues.	Does this role have enough support and tools to succeed?
Freelancer	Focused execution or short-term campaign cleanup.	Limited coverage if the issue involves catalog, pricing, or operations.	What happens when the problem is outside PPC?
Consultant	Strategic guidance for a team that can execute internally.	Advice may not turn into action if ownership is unclear.	Who implements, QA checks, and measures the work?
Software	Brands with internal expertise that need workflow or reporting support.	Automation can scale a weak strategy if the inputs are wrong.	Who reads the data and changes the plan?

Pre-signing checklist for choosing an Amazon advertising agency

Use this checklist before you sign a contract, give the agency access to your account, or increase your advertising budget.

For each question, give a score from 0 to 2:

0 = The answer is unclear.
1 = The answer is only partly clear.
2 = The answer is clear, written down, and supported with examples.

Don’t use the total score to decide if an agency passes or fails. Instead, use it to find areas that need more discussion before you move forward.

Amazon advertising agency checklist

Question	Good answer sounds like	Red flag	Score
What exactly will you manage?	The agency names ad types, reporting, cadence, retail dependencies, and what the brand still owns.	The proposal only says “campaign optimization.”	0 / 1 / 2
Who owns the Amazon Ads account and campaign history?	The brand keeps ownership. The agency gets scoped access and hands over history on exit.	Agency wants to run campaigns in an account the brand cannot access.	0 / 1 / 2
How will access be granted and removed?	Permissions are role-based, documented, and removable.	The agency asks for primary login credentials.	0 / 1 / 2
Which reports will we receive?	Reports include ACoS, ROAS, TACoS, CVR, wasted spend, branded mix, budget pacing, and actions.	Reports are screenshots with little decision context.	0 / 1 / 2
How do you define success?	The agency connects campaign goals to margin, total sales, launch stage, and retail readiness.	Success only means “lower ACoS.”	0 / 1 / 2
What is included in the fee?	Scope, meetings, reporting, seniority, tools, creative, DSP, and extra costs are listed.	Important work is explained verbally but not written in the agreement.	0 / 1 / 2
How do fees change when spend changes?	The incentive model is clear, and budget increases need a business reason.	The agency benefits from more spend without discussing margin.	0 / 1 / 2
What happens if we leave?	The contract explains data, reports, campaign history, access removal, files, and transition support.	There is no exit or handover language.	0 / 1 / 2
What are the notice period and termination conditions?	The contract states the notice period, cancellation conditions, final fees, and transition responsibilities.	The agency cannot explain how to end the agreement or what additional fees may apply.	0 / 1 / 2
How do you handle retail readiness issues?	The agency checks listing, price, stock, offer, and Buy Box blockers before scaling.	The answer says ads are separate from retail issues.	0 / 1 / 2
What changes in the first 30/60/90 days?	The agency separates audit findings, testing, and trend review.	The agency promises instant improvement without data context.	0 / 1 / 2
Who will manage the account day to day?	Names or roles, escalation paths, and review cadence are clear.	Only senior people appear during sales calls.	0 / 1 / 2
Do we need DSP now?	DSP is tied to clear awareness, retargeting, or measurement goals where relevant.	DSP is pushed before Sponsored Ads and retail readiness are understood.	0 / 1 / 2

A strong agency does not need to answer every question with a long document. But it should answer clearly, explain how decisions are made, and be willing to put account control, reporting expectations, and handover rules in writing.

Do I need Amazon DSP, or only Sponsored Ads?

Not every brand needs Amazon DSP.

For most brands, Sponsored Ads are the better place to start. They help you reach shoppers already searching for products like yours and can drive sales.

Amazon DSP is better for brands that want to build awareness, reach new shoppers, retarget past shoppers, or understand ad performance in more detail. But it is a more advanced ad option, so it may not be the right fit for every business.

Before you sign with an agency, check the list above carefully. Make sure there are no unclear points about account ownership, reports, fees, services, or how the contract ends.

Ask the agency to explain everything in writing before you give them account access or approve a bigger ad budget.

Who owns the account
What reports you will get
How the fees work
What services are included
What happens if you end the partnership

If your current agency, a shortlisted agency, or even your own team cannot answer these questions clearly, start with an advertising review before you spend more on ads.

Book Your 1:1 Growth Call with SalesDuo.

FAQs about Amazon Advertising Agency

What does an Amazon advertising agency do?

An Amazon advertising agency manages ad strategy, campaign setup, targeting, bids, budgets, search terms, reporting, and optimization.

Depending on the scope, it may also manage Sponsored Products, Sponsored Brands, Sponsored Display, Sponsored TV, Amazon DSP, and related retail-readiness work.

What are the biggest mistakes when hiring one?

The biggest mistakes are:

Choosing an agency only because it is cheap or has a great sales presentation.
Giving the agency full control of your Amazon account.
Accepting reports that don’t explain what the numbers mean.
Not understanding how the agency’s pricing motivates its decisions.
Hiring an agency before your listings, pricing, and inventory are ready.
Expecting big performance improvements without giving the agency enough time and data to make good decisions.

Should my agency own my Amazon Ads account?

No. Your brand should own the Amazon Ads account, campaign history, billing, dashboards, and reporting files.

The agency should get the right permissions and follow a clear handover process if the relationship ends.

What should an Amazon ads agency report?

A good report should show more than just ad numbers. It should include ACoS, ROAS, TACoS, conversion rate (CVR), wasted ad spend, branded and non-branded performance, budget usage, important search term changes, product-level profitability if available, and any listing or inventory issues that are affecting ad performance.

How much should an Amazon advertising agency cost?

The cost depends on several factors, including the services you need, your ad budget, the size of your product catalog, the marketplaces you sell in, reporting needs, DSP or AMC requirements, creative support, and the experience of the team working on your account.

Instead of looking only at the price, compare what is included in the service, how the agency charges, and what happens if you decide to stop working with them.

When should I choose an agency instead of an in-house team?

Choose an agency when complexity, speed, reporting needs, or cross-functional Amazon work is more than your internal team can handle.

In-house may work well when you need daily control and already have the expertise, tools, and support to manage campaigns properly.

How quickly should I expect results?

You can expect quick audit findings, but lasting ACoS, TACoS, and conversion improvements need enough data, a cleaner structure, testing, seasonality context, and retail readiness.

Avoid judging the relationship from a short or noisy time period.

About the Author

Meet Mamta Mathe, an Associate Content Writer at SalesDuo who specializes in creating practical, research-backed content for Amazon sellers. She enjoys simplifying complex eCommerce topics and helping brands make smarter growth decisions through clear, actionable insights. Outside of work, she loves reading, exploring new ideas, and staying updated on digital marketing trends.

Amazon Marketing Agency Checklist: How to Audit and Choose the Right Partner

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