Amazon advertising costs are set by the most honest auction in marketing: you bid against competitors for shoppers who are already holding their wallets. That honesty cuts both ways, efficient when your economics are right, brutal when they are not. Here are the 2026 numbers and the math that decides which side you land on.
The short answer
Sponsored Products clicks commonly run $0.50 to $2.50, with competitive categories (supplements, electronics, beauty) pushing $3 to $6+. Sponsored Brands price similarly; Sponsored Display and Amazon DSP run on CPMs. Most sellers land at an advertising cost of sales (ACoS) between 15% and 35%, and whether that is good depends entirely on your margin, not on the benchmark.
What sets your cost
Category competition and price point drive the auction; relevance drives your discount (Amazon charges well-matched ads less, like every auction platform); and your organic strength compounds it, products that rank organically convert their paid traffic better, which lowers effective costs. Season matters enormously: Q4 and Prime Day auctions inflate 30-50% while converting better too.
ACoS vs TACoS: the metric that matters
ACoS (ad spend over ad-attributed sales) grades campaigns; TACoS (ad spend over total sales) grades strategy. A rising TACoS means advertising is replacing organic sales; a falling one means ads are feeding organic rank, the flywheel working. Sellers who watch only ACoS routinely kill campaigns that were building their organic position.
Where Amazon budgets leak
Auto campaigns never mined for negatives, bidding on your own branded searches without defense logic, one bid for all match types, and ignoring placement modifiers, top-of-search converts multiples better and deserves the premium. Most "Amazon ads are too expensive" stories are one of these four.
Getting your real number
Your margin structure, category, and organic position set your true allowable ACoS. The $497 Marketing Diagnostic prices Amazon for your actual catalog, alongside everything else in your mix, in plain English, in 14 days. The management practice behind it is our Amazon marketing page and the Amazon PPC management practice. Start here.