Before you start
- Tracking verified against real orders — scaling on double-counted conversions is how stores lose serious money fast.
- Break-even known, so you can tell whether a rising CPA is acceptable.
- Brand separated, so growth is visibly real and not just more of the demand you had.
- Fulfilment that holds at five times the volume.
The order
- Raise budgets on campaigns already above break-even and capped — lowest-risk money there is.
- Add search coverage for converting terms that have no dedicated campaign.
- Open a second channel only once Search has genuinely run out of room.
- Add markets last, and only where operations can serve them.
Expect efficiency to soften
Cheap demand gets harvested first. A 4x falling to 3.2x while spend triples is usually a much better business. Scale against profit, not against the ratio.