Measurement basis
Which number moved, and how it was calculated. Blended MER and contribution margin, not platform-attributed ROAS.
Window
Exact start and end dates. No cherry-picked fortnight standing in for a quarter.
Starting position
Where the account was before we touched it, including what was already working.
What we changed
The specific decisions, so you can judge whether they would apply to your account.
Illustrative — not a client result
A worked example, so you can see the method before you hire anyone
Starting point
A brand spending $12,000 a month with a reported 3.8×
ROAS across Meta and TikTok, against $31,000 of store
revenue at 62% gross margin. The ad accounts claim they produced $45,600 —
147% of everything the business sold. That is the gap, stated
plainly.
Blended MER 2.58
Break-even 1.61
Contribution $7,220
What an audit finds
Most of the budget sits where credit is cheapest to claim — retargeting and
catalogue placements aimed at people already on the site. Cost per new
customer has never been measured, so nobody noticed it rising while blended ROAS
improved.
Real questionWhat does a first-time buyer cost?
What changes
Retargeting is capped at what incremental testing justifies. The freed budget funds
prospecting and a fixed weekly volume of new hooks. Reporting switches to
contribution margin, so a week that looks worse on the platform dashboard but
better in the bank is correctly read as progress.
Judged onCost per new customerHold rate at 3s
Where it lands
Spend rises to $18,000 against $52,000 revenue.
Blended MER improves modestly — 2.58 to 2.89 — but because spend grew
into profitable territory rather than defending a flattering ratio,
contribution roughly doubles. Reported ROAS, notably, went
down.
Blended MER 2.89
Contribution $14,240
Spend +50%
These figures are a worked example chosen to show how the method reasons, not the
outcome of any client engagement. Published client results will appear in this section
under the four-field standard above.