How a Footwear Brand Cut Amazon Ad Spend 18.2% and Still Grew Ad Sales

01The challenge

A footwear brand on Amazon was spending $16.0K a month to generate $58.2K in ad-attributed sales at a 27.45% ACOS and a $0.37 average CPC. Those are not alarming numbers. They are the numbers an account produces when it has been growing by addition: new campaigns get added, old ones stay on, and nobody goes back to turn anything off.

The instinct in a footwear catalog is to keep every ASIN advertised because you cannot always predict which style moves. That instinct is expensive. Spend spreads across products that will not convert at any bid, and across off-Amazon traffic that looks like reach but does not close.

02The approach: The Spend-Down Scale

The Spend-Down Scale is subtraction first: strip the account back to what actually converts, hold bids down to a CPC the category supports, then let the freed budget flow to what is left.

1. Pause what does not convert, at the ASIN level

   Paused non-converting ASINs outright and cut investment in low-performing off-Amazon traffic rather than trying to optimize either into working. In a broad catalog this is where most of the waste lives, and it does not show up until you look ASIN by ASIN instead of campaign by campaign.

2. Bid the CPC down to what the category supports

   Optimized bids to bring the average CPC to roughly $0.30, down from $0.37. In a category with this much competing inventory, paying a premium CPC on the same click buys nothing, and an 18% CPC reduction across the whole account compounds fast.

3. Restructure so budget reaches the best performers

   Rebuilt campaign targeting and reallocated budget into the highest-converting ASINs and keywords, so the money freed by the first two moves landed on the campaigns already proving they could use it.

03The results

Ad spend fell from $16.0K to $13.1K a month, down 18.2%, roughly $2.9K. Over the same period, ad-attributed sales rose from $58.2K to $59.9K, up 2.9%, roughly $1.7K.

Efficiency moved on every metric at once. ACOS improved from 27.45% to 21.81%, and average CPC dropped from $0.37 to $0.30.

Why it worked: the account was not short of budget, it was short of discipline about where the budget landed. Cutting non-converting ASINs and low-value off-Amazon traffic did not cost sales, which is the tell that the spend was never producing them. Every dollar removed from a campaign that was not converting is a dollar of margin, and here it came alongside growth rather than instead of it.

04FAQ