"Winning the spreadsheet" is often the fastest way to lose the market. I see thi
By Marty Borotsik · February 10, 2026 · Curated by George's Blog
"Winning the spreadsheet" is often the fastest way to lose the market.
I see this mistake constantly. A seller obsesses over lowering ACoS. They slash bids. They pause "expensive" keywords. The report looks great for a week.
But then the silence hits.
Sales slow down. Organic rank slips. Suddenly, your "efficient" ads aren't driving the flywheel anymore.
Here is the reality check: ACoS is an ad metric. TACoS is a business metric.
If your total sales are growing and TACoS is holding steady? Don't panic if ACoS creeps up. That’s just the cost of acquiring market share.
Don't optimize for a single day. Optimize for the trend.
𝗧𝗵𝗲 𝗦𝗰𝗲𝗻𝗮𝗿𝗶𝗼:
Brand A wants to lower their ACoS. They cut bids on high-volume keywords.
𝗠𝗼𝗻𝘁𝗵 𝟭 (𝗔𝗴𝗴𝗿𝗲𝘀𝘀𝗶𝘃𝗲):
𝗔𝗱 𝗦𝗽𝗲𝗻𝗱: $𝟭𝟬,𝟬𝟬𝟬
𝗧𝗼𝘁𝗮𝗹 𝗦𝗮𝗹𝗲𝘀: $𝟭𝟬𝟬,𝟬𝟬𝟬
𝗔𝗖𝗼𝗦: 𝟯𝟬% (𝗙𝗲𝗲𝗹𝘀 𝗵𝗶𝗴𝗵)
𝗧𝗔𝗖𝗼𝗦: 𝟭𝟬% (𝗛𝗲𝗮𝗹𝘁𝗵𝘆)
Month 2 (The "Efficiency" Trap): They cut spend to "improve" ACoS.
𝗔𝗱 𝗦𝗽𝗲𝗻𝗱: $𝟱,𝟬𝟬𝟬
𝗧𝗼𝘁𝗮𝗹 𝗦𝗮𝗹𝗲𝘀: $𝟰𝟬,𝟬𝟬𝟬
𝗔𝗖𝗼𝗦: 𝟮𝟬% (𝗟𝗼𝗼𝗸𝘀 𝗯𝗲𝘁𝘁𝗲𝗿 𝗼𝗻 𝗽𝗮𝗽𝗲𝗿!)
𝗧𝗔𝗖𝗼𝗦: 𝟭𝟮.𝟱% (𝗔𝗰𝘁𝘂𝗮𝗹𝗹𝘆 𝗴𝗼𝘁 𝘄𝗼𝗿𝘀𝗲)
By chasing a lower ACoS, they lost organic ranking. Total sales dropped by 60%. Efficiency went up, but the business shrank.
Is your organic engine actually healthy, or are you just saving your way to zero?
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