Meta ads run from the unit economics up.

−29%cost per acquisition in one week

5×click-through gap between ad angles

30+new ads briefed and shipped a week

£0.20per landing page view on traffic campaigns

Zooz Drinks, UK

CPA cut 29% in one week

£44.65cost per acquisition, down from £62.68

−30%ad spend

44 → 43orders, volume held

1.29% → 1.40%outbound click-through rate

How I found it

Split CPA into cost per landing page view and conversion rate. About 90% of the rise was traffic cost, not the website.
CPM had improved 10%, but outbound CTR fell 25% while reach grew 70% and frequency dropped. That meant over-scaling into colder audiences, not creative fatigue.
Budget on ads under 1.1% CTR had grown from 14% to 42%, while three ads averaging 2.4% CTR had stopped delivering.
Cut the ad set running at £95.07 CPA and moved budget onto the ads that were working.

Ad set CPA, against a £40 target

Cut ad setbefore

£95.07

Live ad set 1after

£40.15

Live ad set 2after

£41.90

Live ad set 3after

£42.13

Zooz Drinks, UK

Ads people can check beat ads people relate to

5×higher outbound CTR for functional claims over lifestyle ones, across every ad in the account

Outbound CTR by claim type

Functional"no next-day bill", "10 minutes"

1.4–3.1%

Lifestyleidentity and mood

0.3–0.6%

Now the briefing rule: lead with something the viewer can check.

Best ad under the new rule

2.07%outbound CTR

£2.69per landing page view

£38.96CPA, under the £40 target

Creative production

30+ new ads every week

10–15UGC videos a week

20statics a week

5new concepts a week

I brief every UGC video, pick the creators, review the edits and QA every ad before it goes live.

Two-week cycle, Monday to MondayUGC briefsCreator selectionAI statics9:16 master, 4:5 feed cutsNaming and UTM checks

Watch the ads

Zooz Drinks, UK

Every CPA target checked against payback

Built the cost model the account is judged on, so I know if a CPA target works before spending against it.

Months to pay back a £40 CPA

24-pack

Month 1

16-pack

Month 1

8-pack

Month 3

Landed cost per canBreak-even ROAS and CPAReal renewal dataOffer and discount modelling

Zooz Drinks, UK

Numbers that match across Meta, Shopify and Klaviyo

~20%Meta over-reporting on last click

~12%once ad clickers who came back via Google or direct are credited

Weeklyreport where every number has a named source

Traced it order by order, down to a customer who clicked an ad and came back through Google 64 seconds later.