This Amazon PPC guide starts with how Amazon PPC works: it’s a real-time auction where, every time a shopper searches, Amazon ranks competing ads by a combination of bid and relevance, and the winner pays roughly what it took to beat the next advertiser. Relevance is judged mostly by how often your ad gets clicked and how often those clicks turn into sales. That’s why a well-converting listing can win placements over a competitor bidding more. Below we explain the auction, the levers you control and how to set up campaigns that win it.
Table of Contents
The three ad types
- Sponsored Products: single-product ads in search results and on product pages. The core of most accounts.
- Sponsored Brands: headline and video ads at the top of search showing your logo and several products (Brand Registry required).
- Sponsored Display: product, category and audience targeting on and off Amazon, often used for retargeting (Brand Registry required).
How the Amazon PPC auction works
Ad rank: bid and relevance
Amazon doesn’t publish its formula, but in practice ad rank behaves like bid multiplied by relevance. Relevance comes from how closely your listing matches the search, your ad’s click-through rate and your product’s conversion rate. A product that converts well earns cheaper placements; a weak listing has to outbid everyone to compete.
What you actually pay
Amazon’s auction is designed so the winner pays close to what was needed to beat the next-highest ad, not necessarily the full bid. That’s why your actual cost per click is often below your bid, and why raising a bid doesn’t always raise what you pay by the same amount.
Bidding strategies
- Dynamic bids, down only: Amazon lowers your bid when a click looks less likely to convert. The safest default.
- Dynamic bids, up and down: Amazon can raise your bid (up to 100% for top of search) when a sale looks likely. Useful for proven keywords; risky on new ones.
- Fixed bids: Amazon uses your exact bid. Good for testing.
Placement adjustments
You can raise bids by a percentage for top of search, rest of search and product pages. Use the placement report to see which converts best and adjust each campaign accordingly.
The PPC-to-organic flywheel
Amazon’s organic ranking rewards products that sell for a keyword. PPC buys those sales before you rank organically. As sales history builds, organic rank rises, you need less ad spend for the same sales and TACoS (ad spend divided by total sales) falls. That flywheel, not a low ACoS, is the real goal of Amazon advertising, and every other step in this Amazon PPC guide serves it.
How to set up campaigns that win the Amazon PPC auction
- Fix relevance first. Make sure your title and bullets contain the keywords you’ll bid on and your main image stands out in search.
- Launch an automatic campaign to discover which searches convert.
- Launch manual exact and phrase campaigns for your core keywords, with bids set from your margin.
- Add product targeting on competitor ASINs where your product compares well on price, rating or features.
- Harvest weekly: move converting search terms into exact match and add wasteful ones as negatives.
- Add Sponsored Brands once you have Brand Registry, to defend your brand terms and win the top of search.
Setting bids from your numbers
A simple formula: target bid = average order value × conversion rate × target ACoS. A $35 product converting at 10% with a 25% target ACoS supports a bid of about $0.88. Start there, then adjust from real data. That is how Amazon PPC works in practice: bids follow your numbers, not guesses.
Amazon PPC guide: FAQ
Does the highest bid always win?
No. In the Amazon PPC auction relevance matters, so a strong listing can win with a lower bid.
Why is my cost per click lower than my bid?
Because you typically pay close to what was needed to beat the next ad, not your full bid.
Should I use dynamic bidding up and down?
On proven keywords with good conversion data, it can win more sales. On new or unproven keywords, start with down only.
How often should I adjust bids?
Weekly for active campaigns, once each keyword has enough clicks to judge.
New to Amazon ads? Start with Amazon PPC for beginners. Ready for more? Read advanced Amazon PPC tactics, or let our PPC team audit your account for free.
