05/10/2026
A channel shouldn't get more money this Q4 just because it had it last year.
It should earn the next pound.
Before you add another £1,000 anywhere, put it through four checks:
1️⃣ Is it incremental?
How many of those sales would have happened anyway? It's one of the hardest questions in marketing to answer, and reported conversions won't answer it for you.
2️⃣ What will the next £1,000 add?
Not the average across all your spend. Just the extra £1,000. As spend goes up, each extra sale tends to cost more. Is it still profitable after product, discounts and fulfilment?
3️⃣ Can people actually buy it?
Out of stock, patchy distribution or hard to find on shelf? More advertising can create demand someone else captures.
4️⃣ What else could that £1,000 do?
Better creative. Fixing conversion. Retail visibility. A new channel test.
Then make the call: spend more, spend differently, or stop.
None of these needs a perfect answer. A reasonable one beats "it had it last year".
Save this for your next budget conversation.