How to Choose an Amazon PPC Agency in the UK
🔍 Seven Questions to Ask Before You Hand Over Your Ad Budget
Most Amazon sellers hit the same point: ad spend is rising, sales are rising, but profit is not rising at the same rate. That is usually when hiring an Amazon PPC agency comes up.
The problem is that "agency" covers everything from one freelancer running auto campaigns to specialist teams who manage ads alongside inventory, pricing and listings. Choose well and PPC becomes a profit engine. Choose badly and you pay twice: once in fees, once in wasted ad spend.
Why the Timing Matters
Q4 is the most expensive stretch of the year for Amazon advertising in the UK. Competition rises into Black Friday and Cyber Monday, and an agency that is not watching your margins can burn through a month of profit in a week. Appointing an agency before peak, not during it, gives them time to clean up the account first.
What a Good Amazon PPC Agency Actually Does
Starts with your numbers (landed cost, fees, returns, break-even ACoS), not with campaigns.
Structures campaigns by shopper intent, so you can see what drives profit and what bleeds it.
Reports on profit and TACoS, not just ROAS and sales.
Links ads to stock levels and listing quality, so you are not paying for clicks on a product that is about to run out or does not convert.
Seven Questions to Ask Before You Sign
1. How will you set our target ACoS?
A good answer starts with break-even ACoS worked out from your margins. A generic "25% for everyone" is a warning sign.
2. Which metric do you report on first?
You want TACoS and contribution margin up front. ROAS alone can look healthy while profit falls.
3. Who actually manages our account?
Ask for the named person, their experience and how many accounts they run.
4. What happens when stock gets low?
They should pause or throttle ads before you run out, and flag inventory risks to you.
5. How often do you optimise, and what do you change?
Ask for a real example of a weekly change log.
6. Who owns the accounts and the data?
You should always own Seller Central and Amazon Ads. The agency gets user access, nothing more.
7. What does a bad month look like, and what do you do about it?
Honest agencies have a clear answer. Others promise there will not be one.
How Agencies Charge
The three common models are a percentage of ad spend, a flat retainer, and a performance-based fee. A percentage of spend rewards the agency for spending more, which is not always in your interest. A flat or tiered retainer usually aligns better with profit. Whichever you choose, read the notice period and avoid long lock-ins.
For a wider view of what to budget, see our guide to Amazon advertising costs in the UK.
Red Flags
Guaranteed ROAS or ACoS.
No questions about your margins or stock.
Reports showing only impressions, clicks and sales.
Reluctance to give you account access or share the data.
Long contracts with no exit.
Case studies with no context on category, spend or margin.
Metrics to Demand Every Month
TACoS: total ad spend divided by total sales, not just ad sales.
Contribution margin: what is left after ad spend.
Wasted spend: money spent on search terms with clicks and no orders.
Ad-attributed vs organic sales: to see whether ads are lifting your rankings.
Final Thoughts (Straight From Us)
The right agency is a commercial partner, not a bid-adjuster. At TD Strategists we start every PPC engagement with a margin check, then build campaigns around profit.
👉 If you want a second opinion on your current setup, take a look at our Amazon advertising agency service or our Amazon account management service, or get in touch.
