How a pre-workout brand cut ACoS 42% and grew sales 58% in 60 days

The brand

An established US sports nutrition brand with a strong pre-workout line was spending heavily on Amazon ads but watching its margin shrink. Sales were steady, but a rising ACoS meant every extra dollar of growth was costing more than it should — and the team couldn’t see where the budget was actually going.

The goal: bring ACoS down to a profitable level without losing sales volume or the organic rank the ads were supporting.

The challenge

A quick audit surfaced three problems draining the account:

• Roughly a third of ad spend was going to search terms that rarely converted.
• Loose broad-match targeting pulled in irrelevant, expensive clicks.
• A flat bidding setup ignored which placements actually drove sales.