The right questions expose a weak Amazon PPC agency inside one phone call, before you’ve spent a pound or a dollar. Ask whether they diagnose the listing before quoting a budget, name the actual person managing your account, model their fee at double your current spend, and confirm what happens to your data if you leave — the answers to those four alone eliminate most of the wrong hires.
Key Takeaways
- Diagnose the listing before the ad spend — a bad conversion rate makes more traffic more expensive, not more profitable
- Get a name and a caseload, not “a dedicated account manager”
- Model the fee structure at your current spend and at double it — percentage and flat-fee pricing cross over around $15,000–£12,000/month
- Ask what a strong operator changes (and deliberately doesn’t change) in week one
- UK and US accounts need separate benchmarks in local currency — a US-calculated break-even ACOS doesn’t transfer directly to a UK account
- Confirm exactly what transfers to you if you leave, before you sign anything
Why the Interview Matters More Than the Pitch Deck
Every agency has perfected the pitch deck by the time you see it — polished case studies, a confident senior strategist on the call, projected growth curves. None of that tells you who’s actually going to touch your campaigns next Tuesday.
Hiring paid-media help is one of the largest recurring decisions a growing brand makes without a rubric. Sellers routinely compare proposals for weeks, then decide on gut feel — and end up funding an account manager’s learning curve with a real monthly budget. The questions below are built to surface that risk in a single call, before any contract is signed.
Know Your Own Numbers First: 2026 Benchmarks (UK & US)
Walk into any agency call already knowing whether your numbers are actually bad, or just unfamiliar. Cross-category averages hide as much as they reveal, so treat these as a starting comparison point, not a target — your own break-even ACOS from margin always takes priority over a platform-wide number.
| Metric | US (2026) | UK (2026) | What a bad number usually signals |
| Typical CPC | ~$1.10–$1.20 | ~£0.55–£2.20 (format-dependent) | Category pressure, not automatically an agency failure |
| Cross-category ACOS | ~29%–35% | Comparable, category-dependent | Bid or targeting problem if well above category norm |
| Healthy TACOS (established brand) | 10%–15% | 10%–15% | Ads are renting sales rather than building organic rank if rising |
| Conversion rate | ~10%–12% | Comparable, category-dependent | Usually a listing problem, not an ads problem |
| Typical management fee (small-mid brand) | $1,000–$5,000/month | ~£800–£4,000/month | — |
The UK is one of the more expensive and competitive individual international markets for Amazon PPC, even though the US remains the larger and more saturated marketplace overall — meaning “UK is cheaper” is true in aggregate but not guaranteed in every category, and pulling your own five numbers before the call matters more than any published average.
9 Questions to Ask an Amazon PPC Agency
Ask these in order — each answer sets up the next, moving from diagnosis to people to money to execution to exit.
1. How Do You Know Whether My Listing or My Ads Are the Real Problem?
A real operator diagnoses before quoting a budget. If conversion rate is well below category norm, more ad traffic multiplies the loss rather than the return.
Ask it directly: “Before we talk budget, look at my conversion rate and tell me whether ads are even my actual problem right now.”
A strong answer checks the metric against your category and says the listing comes first if the listing is the constraint. Anyone who opens with a spend recommendation before looking at your detail page is selling spend, not a diagnosis.
2. Who Specifically Manages My Account After I Sign?
Get a name, a seniority level, and the one number agencies rarely volunteer unprompted: how many other accounts that person carries.
Ask it directly: “Name the person who will actually touch my campaigns, and tell me their current account caseload.”
A vague “you’ll have a dedicated account manager” without a name and a caseload is the sound of a handoff to whoever’s available, not a real staffing plan.
3. How Does Your Fee Change If I Double My Ad Spend?
Percentage-of-spend pricing pays the agency more as your budget grows, whether or not your profit grows with it. Run the math at your actual numbers, in your actual currency, rather than accepting a pricing model on principle.
Ask it directly: “Quote me both a percentage and a flat structure, at my current spend and at double it, and tell me what falls outside the fee.”
Percentage and flat-fee pricing tend to cross over somewhere in the $15,000–£12,000/month range — percentage wins below that line, flat wins above it. Watch for software, creative, and listing work billed as separate line items on top.
4. Can You Calculate My Break-Even ACOS on This Call?
Break-even ACOS comes directly from your margin and price — a working specialist can do this arithmetic in under two minutes, live, using your numbers.
Ask it directly: “My unit sells for X and costs me Y all-in — what’s my break-even ACOS?”
A strong answer runs the math out loud and explains what would move the number. “We generally aim for 25%” is an industry-average answer pulled from nowhere near your actual P&L.
5. What Will You Deliberately Leave Alone in Week One?
What they promise not to touch is more revealing than what they promise to change. A manager who rebuilds every campaign in week one deletes the performance history you already paid to build.
Ask it directly: “Walk me through week one specifically — what are you leaving alone, and why?”
A strong answer opens with an audit, negative-keyword cleanup, and budget triage, then stages structural changes over 30–60 days. A full teardown pitched as a fresh start is convenience for them and lost data for you.
6. Which Metric Do You Lead With in a Bad Month?
Agencies that only report ACOS can hand you a technically-good ACOS in a genuinely bad month. Ask what they lead with when results actually drop.
Ask it directly: “Show me how you reported to a client during a month where results dropped — what did you tell them?”
A strong answer puts TACOS and total revenue ahead of ACOS alone, and describes actions taken, not just outcomes observed. Every account has had a bad month; an agency with no story here is either new or not being fully straight with you.
7. What Exactly Do I Keep If I Leave?
You should keep your campaign structures, bulk files, naming conventions, historical search term data, and full account access — all of it, since you paid for it.
Ask it directly: “If I leave in six months, what transfers to me, and in what format?”
A strong answer is immediate and unqualified. Any hesitation here is a signal the contract was built to make leaving expensive.
8. How Do You Handle Dual-Market Accounts If I Sell in Both the US and UK?
This question rarely appears on generic checklists, and it should for any brand selling cross-border. Ask whether the agency manages US and UK as genuinely separate accounts with separate, currency-adjusted benchmarks, or blends them into one dashboard.
Ask it directly: “If you’re managing both my US and UK accounts, are they benchmarked separately in local currency, or reported as one blended number?”
A strong answer treats them as separate accounts against separate targets — a US-calculated break-even ACOS doesn’t transfer directly to a UK account once currency and margin differences are factored in. A blended-reporting answer is a sign of less rigor than a genuinely global operation needs.
9. What Does Your Onboarding Actually Look Like Week by Week?
Vague timelines (“results in 30 days”) are a soft red flag. Ask for the actual sequence: audit, restructure, data-collection window, then optimization.
Ask it directly: “Walk me through weeks 1 through 12 specifically, not just ‘we’ll optimize.'”
A strong answer maps roughly to: audit and restructure in weeks 1–2, a data-collection window through week 6 (expect ACOS volatility here, not a straight line down), bid and budget optimization through week 12, and scaling from month four onward. Anyone promising dramatic ACOS improvement inside two weeks is setting an expectation the auction mechanics don’t support.
The Scoring Sheet
Score every candidate live, on the same call, using the same sheet. Two points for a strong answer, one for acceptable, zero for a disqualifier.
| Question | Strong answer (2 pts) | Disqualifying answer (0 pts) |
| 1. Listing or ads | Checks CVR against category first | Quotes a budget immediately |
| 2. Who manages it | Names the person and their caseload | “A dedicated account manager” |
| 3. Fee structure | Models both, at your spend and double it | Won’t model the alternative |
| 4. Break-even ACOS | Calculates it live from your numbers | Quotes an industry average |
| 5. Week one | Stages changes, protects history | Full rebuild pitched as a fresh start |
| 6. Bad-month metric | Leads with TACOS and actions taken | ACOS only, no bad-month story |
| 7. Exit terms | Everything transfers, no hesitation | Proprietary system holds your data |
| 8. Dual-market handling | Separate accounts, local-currency benchmarks | Blended reporting across markets |
| 9. Onboarding timeline | Specific week-by-week sequence | Vague “results in 30 days” promise |
Eighteen points are available. Anything below eleven, walk away regardless of how strong the pitch deck looked. A single zero on questions 1, 2, or 7 should end the conversation on its own — those three are the ones that keep costing money long after you’ve signed.
UK-Specific Questions to Add If You’re Hiring for a UK Account
If you’re hiring specifically (or partly) for a UK Amazon account, add these before signing:
- “Are you quoting me in GBP against UK-specific benchmarks, or converting from a US number?” A converted US benchmark is not the same as a UK one — CPC, competition density, and review-velocity expectations differ by market.
- “How do you handle VAT and Amazon’s UK-specific fee structure in your margin calculations?” Break-even ACOS math that ignores VAT will overstate profitability.
- “What’s your experience with UK review velocity for new listings?” UK listings often need a longer runway to build review depth before Sponsored Brands and DSP budgets can scale efficiently — an agency without a clear answer here may be applying US timelines to a UK account.
Red Flags That Should End the Conversation
Five patterns show up constantly in accounts inherited mid-contract from a previous agency:
- A guaranteed ACOS number quoted before knowing your margin or product
- A twelve-month contract with early-termination penalties on a first engagement
- Judging month one on raw sales instead of on structural changes made
- A single blended report across US and UK accounts with no currency adjustment
- Comparing your quote against another agency’s quote without first comparing scope
Real result worth knowing about: a UK apparel brand working with Ecom Ranker saw TACOS drop from 18.7% to 9.8% through structural account changes rather than simply increasing spend — the kind of outcome that comes from getting questions 1, 5, and 9 above right from day one. See the full TACOS case study breakdown for the specific changes made and the month-by-month results.
FAQs About Hiring an Amazon PPC Agency
1 . How much do Amazon PPC agencies charge per month?
Budget roughly $1,000–$5,000/month (or approximately £800–£4,000/month) for management at small-to-mid brand spend levels, on top of the ad spend itself — exact pricing scales with ad spend and catalogue complexity.
2 . Is a flat retainer or percentage-of-spend better?
Percentage tends to cost less below roughly $15,000/£12,000 in monthly ad spend and more above it — quote both structures at your current spend and at double it before deciding.
3 . Should an agency guarantee a specific ACOS?
No — treat a guarantee as a red flag. No agency controls a live auction with the majority of a category bidding in it, so a guarantee is a sales tactic rather than a real capability.
4 . Are long-term contracts normal?
Some agencies require them, but month-to-month is standard for a first engagement. A twelve-month lock with early-termination penalties shifts all the risk onto the brand.
5 . Do I need a different PPC strategy for the UK versus the US?
Yes. CPC, competition levels, and review-velocity expectations differ enough between the two marketplaces that dual-market sellers should manage US and UK accounts against separate, currency-adjusted benchmarks rather than a single blended target.
6 . What is Amazon DSP, and do I need it?
Amazon DSP is programmatic display and video advertising extending beyond Amazon’s own search results — generally worth adding only once Sponsored Products and Sponsored Brands are stable and the catalogue has enough review depth to support demand generation.
7 . Should my PPC agency also handle my listings and A+ Content?
At minimum, they should tell you clearly when the listing itself is the constraint — running ads against a weak detail page burns budget regardless of how well the campaigns are structured.
8 . How long before I see real results?
Expect roughly 1–2 weeks for audit and setup, 4–6 weeks to gather statistically significant data (with normal ACOS volatility during this window), and meaningful stabilization by month three to four.
Get a Second Opinion Before You Sign
The brands that pick well aren’t the ones with the biggest budgets — they’re the ones who walked into the call with their own numbers and a scoring sheet instead of a wish list. Nine questions, eighteen points, one hour of preparation is the difference between a partner who compounds your growth and a vendor who bills you while TACOS quietly climbs.
Not sure whether the numbers a prospective agency quoted you actually hold up? Ecom Ranker offers a free Amazon PPC audit that shows you where your account actually stands before you sign anything with anyone — or explore our full Amazon PPC management services for UK and US accounts.
