2026-09-09 · Étienne Laurent
Most European brands approach agency hiring the same way: shortlist three names from a Google search, request proposals, pick the lowest quote or the most persuasive pitch. Six to twelve months later, the same brands are quietly looking again.
The issue is rarely the agency's talent. It's the vetting process — specifically, the gaps a polished sales pitch hides but a six-month engagement exposes. This guide is the one we'd hand to any brand we couldn't take on ourselves: seven patterns that predict a bad engagement, ordered by cost, plus the exact questions that surface them before you sign.
These four patterns don't cause a "we'll do better next quarter" conversation. They cause a contract termination and a migration project.
1. Promised ACoS, ROAS, or revenue numbers — without an audit. Any agency that quotes a target ACoS or a revenue forecast in the proposal before seeing your account is selling fiction. Numbers come from baselines — your current ACoS, category benchmarks, organic rank, conversion rate, inventory health. A serious agency says "send us your account, we'll come back in 7 days with a diagnosis and a defensible range." An unserious one sends a deck.
Ask: "Before signing, can you give us a defensible ACoS target range based on the 90-day trailing data of brands in our category on amazon.de?" If the answer is "we'll figure it out once we're in" — walk.
2. Fees tied to ad spend percentage. A media-spend-percentage model rewards the agency for spending more, not performing better. The math is simple: if your agency makes €0.10 on every €1 you spend, they want you to spend more, even at the margin. This is the most common conflict-of-interest in Amazon agency pricing — and the easiest to spot on a one-page proposal.
Ask: "What is the fee model in EUR, separated from media spend? Is there a monthly cap, and who can change it?" A fixed fee with a clear scope, plus a hard media cap with named approvers, is the structure that aligns the agency with your margin, not your spend.
3. No native-language account manager per market. An agency that runs your amazon.de, amazon.fr, amazon.it, amazon.es from a single English-speaking team is doing translation, not localisation. Germany is unforgiving on grammar, claim wording, and compliance-safe language; Italy and Spain have buyer-intent patterns that don't survive a direct translation; France rewards cultural fluency in seasonal copy. If the proposal doesn't name a native-language account manager for each marketplace, you're paying for a one-market agency in a five-market wrapper.
Ask: "Who is the named account manager for amazon.de? May we book a 15-minute introduction in German before signing?" If the answer names a single person for all of Europe — that's the red flag.
4. No written penalty guarantee for VAT, EPR, or Authorized Representative filings. In Europe, compliance errors are not billable hours — they're fines. A late or wrong VAT filing, a missed EPR registration, an EU Authorized Representative arrangement that doesn't hold up to legal scrutiny can cost a brand five- to six-figure penalties. A serious agency either carries professional indemnity insurance that covers this, or includes a written commitment in the contract. "We'll handle it" is not a guarantee.
Ask: "If a VAT filing you manage is late or wrong, who pays the penalty? Please show the clause in the contract draft."
These don't kill the engagement in month one. They cost you six months of underwhelming results and a difficult migration.
5. "Europe-wide" with no country-specific keyword research. A single keyword set — even translated — will lose 30-50% of available search volume in Germany, Italy, or Spain. Tools that index only US Amazon data, or that extrapolate EU volumes from US trends, systematically underweight high-intent local terms. If the agency's keyword research methodology doesn't pull per-marketplace data (Sorftime, Helium 10 EU, or comparable), they will pay for low-intent traffic and call it "early phase learning."
Ask: "Which keyword tools do you use, and do they support amazon.de, amazon.fr, amazon.it, amazon.es as separate marketplaces? Can you show us three native-language keywords you'd target for our top product in each market?"
6. Reporting that shows numbers but not decisions. A monthly report that lists impressions, clicks, CTR, CPC, ACoS, TACoS, and revenue — without an action section — is data, not reporting. The purpose of an agency report is to answer: What do we scale? What do we pause? What do we fix? What do we prioritise next? If the agency can't tell you the next three moves in plain language, they're reading it to you, not working it.
Ask: "In your last monthly report to a comparable client, what were the three actions you recommended, and what happened after?" If they can't answer without checking their files, the reporting is template-driven.
7. Promised full-service at half of market rate. In 2026, full-service Amazon agency engagements for European brands at €500K–€5M/year in marketplace revenue run €3,000–€8,000/month in agency fees, plus media spend. Quotes below €2,000/month for the same scope are not aggressive pricing — they're under-scoping. Something is missing: PPC management, content production, A+ Content, compliance support, or all four. Low quotes are the most polite form of misrepresentation in this industry.
Ask: "In your quote, which services are included and which are billed separately? Specifically: how many localised listings per quarter, how many A+ Content modules, how many markets are covered, and what is the media-spend management fee?"
Bring this to the second meeting. Fifteen questions, ten minutes, one answer per row.
| # | Question | Pass / Fail |
|---|---|---|
| 1 | Audited our account before quoting a target ACoS? | |
| 2 | Fee model is fixed-fee + media cap, not ad-spend-percentage? | |
| 3 | Native-language account manager named per marketplace? | |
| 4 | Written penalty guarantee for VAT/EPR/Authorised Rep filings? | |
| 5 | Professional indemnity insurance covering compliance errors? | |
| 6 | Per-marketplace keyword tools (Sorftime, Helium 10 EU, or equivalent)? | |
| 7 | Three sample keywords per market for our top product? | |
| 8 | Sample monthly report with action section, not just metrics? | |
| 9 | Quote breaks down included vs billed-separately services? | |
| 10 | Three references from comparable brands (category, size, geography)? | |
| 11 | Case study with before/after metrics, separated by marketplace? | |
| 12 | Amazon Ads Partner certification current and verifiable? | |
| 13 | Named team structure: strategist + AM + content + ads? | |
| 14 | 90-day onboarding milestones in the contract? | |
| 15 | Termination clause with data handover in 14 days? |
A serious agency answers these in writing. A serious agency welcomes them.
Six or fewer passes: walk. The proposal will cost more than it returns.
Seven to ten passes: engage with a 90-day exit clause and a quarterly review. The engagement is workable but not low-risk.
Eleven or more passes: you're looking at a top-quartile agency. Move forward with confidence — and budget a full quarter before judging performance.
The cheapest agency proposal is rarely the lowest-cost engagement. The most expensive red flag is the one you didn't ask about before signing.
This article was drafted by MIUMX's editorial team and reviewed by a senior strategist before publication. MIUMX provides full-service Amazon account management for brands in Germany, France, Italy, Spain, the Netherlands, Belgium, Sweden and the UK. If you're evaluating agencies and want a second opinion on a proposal, we offer a free 30-minute diagnostic. No commitment, no proposal — just an honest read of what your account actually needs.