Amazon's standard ACoS calculation has a blind spot. When a customer clicks your ad for Product A but buys Product B, your campaign gets zero credit for that sale. You see high ACoS. You consider pausing. But the revenue was real. It just got credited somewhere else.

In this episode, I walk through a real client account where $78,400 in sales over 58 days was completely invisible in Campaign Manager. One product, a starter-size collagen pouch, was responsible for the majority of it. Its campaigns looked like they were barely breaking even at 60-80% ACoS. When we pulled the Purchased Product Report, that same product had driven $47,200 in halo revenue from customers who clicked the starter ad and upsized to larger variants.

I cover what halo purchases are and why Campaign Manager can't show them, the free report inside your account right now that reveals the full picture, the Gateway ASIN concept where one product carries the entire range through acquisition rather than direct conversion, and the Blended ACoS formula that gives you the real efficiency number. One campaign went from 108% direct ACoS to 27% blended. It was on the verge of being paused.

I also break down cross-category halo, where collagen ads were quietly driving $3,100 in joint support capsule sales that no campaign dashboard could explain. Cut the collagen spend because the direct ACoS looks soft and joint support drops weeks later with nothing in the data to tell you why.

The data is already in your account. You just need to know where to look.

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