Amazon ad bids, set from what a click is worth

How should I set bids for Amazon Sponsored Products?

Set each bid from three numbers: the product’s contribution margin per order, the keyword’s CVR, and the profit you want to keep per order (what contribution margin means).

1. 01
   Value of a clickCVR × contribution margin per order. This is your break-even CPC.
2. 02
   Target CPC(Contribution margin − profit kept per order) × CVR.
3. 03
   BidThe target CPC, then adjusted for each placement (below).

Amazon’s suggested bid is built from the bids that won impressions for ads like yours over the past 7 days (Amazon Ads). It tells you what wins the auction, not what your click is worth.

How do I work out the most I can pay per click on Amazon ads?

The most you can pay is your break-even CPC: CVR × contribution margin per order. Contribution margin is what one order leaves after cost of goods, Amazon’s referral and fulfillment fees and expected returns, before ad spend. A $40 product that leaves $12 per order and converts 10% of clicks is worth $1.20 per click.

Use the margin of the product the click is likely to sell, not a store average. Two products at the same price can carry very different fees and costs, so the same CVR can justify very different bids.

How do I calculate break-even ACOS on Amazon?

Break-even ACOS is your contribution margin as a share of price, before ad spend. A product that leaves $12 of a $40 price has a 30% margin, so its break-even ACOS is 30% and its break-even ROAS is 1 ÷ 0.30 = 3.33. Above that ACOS, each ad-driven order loses money on the first purchase. For how far ACOS runs across stores, see what a good ACOS is on Amazon.

Should my Amazon bid equal my break-even CPC?

No. A bid at break-even earns nothing on any click charged the full bid, and on Amazon many clicks are. Amazon’s help center says reserve prices mean the price “may exceed the runner-up bid” but never your maximum bid (Amazon Ads).

In August 2026 the FTC and 22 states sued Amazon, alleging that Sponsored Products advertisers were charged their own winning bid close to 80% of the time (FTC). Amazon calls the suit misguided (Amazon), and the claims are unproven (what the FTC suit alleges).

Check your own account: compare each keyword’s average CPC with its bid. Where the two sit close together, bid your target CPC, not your break-even.

Is bidding to a target ACOS the best strategy for Amazon PPC?

A target ACOS works when you set it per product from that product’s margin. One target across products with different margins overspends on the low-margin ones and underspends on the high-margin ones. Profit per click compares keywords, placements and products directly, so it is the better number to bid from; read ACOS as a result. More on whether a target ACOS should equal break-even.

A worked example

One keyword on one product; the numbers are illustrative.

1. 01
   Value of a click10% × $12.00 = $1.20, the break-even CPC.
2. 02
   Target CPC($12.00 − $3.00) × 10% = $0.90, leaving $0.30 profit per click.
3. 03
   In Amazon’s terms$9.00 of ad spend per $40.00 order is an ACOS of 22.5% (ROAS 4.44). Break-even is ACOS 30% (ROAS 3.33).
4. 04
   BidAbout $0.90 where your reports show clicks charged near the bid. A $1.20 bid would spend the whole margin on those clicks.

What starting bid should I use for a new Amazon keyword?

Start from the CVR you expect, not from a blank: take the same product’s CVR on similar keywords, or the product’s own average, and bid the target CPC it implies. Hold the bid there until the keyword has clicks of its own.

Use Amazon’s suggested bid as a check, not a target. If your target CPC sits far below the suggested range, the keyword may be too expensive for this product at today’s prices.

How do I bid on Amazon keywords that have little data?

Keep the bid near what similar keywords justify, and judge the keyword on clicks, not days. A handful of clicks says little: at an 8% CVR, 15 clicks pass without an order 29% of the time. Cutting a bid or pausing after a few clicks with no order throws away keywords that would have converted. Our keyword guide works out how many clicks a keyword test needs.

Lean on the CVR of similar searches for the same product until the keyword’s own count is large enough to stand alone.

How should I bid differently for top of search and product pages on Amazon?

Bid each placement on its own CVR. In our accounts, non-branded clicks at the top of search converted about twice as often as clicks on product pages, so each one was worth about twice as much.

• CVR. Within each store, top-of-search clicks converted 2.1 times as often as product-page clicks, in all 20 stores, and 1.44 times as often as rest-of-search clicks, also in all 20.
• Price. Those clicks also cost 1.4 times as much, so the edge after price is smaller: a dollar at the top of search bought 1.5 times the orders of a dollar on product pages.
• Product pages. They had a higher ACOS than top of search in 17 of 20 stores, and higher than the rest of search in 17 of 20.
• Branded searches lean harder still to the top: 56% of branded clicks landed there at the median store, converting at 30.7%. Mixed in, they make top of search look better for new customers than it is, which is why the table leaves them out (more on what branded clicks cost against non-branded ones).

If your base bid is right for product pages, the median store’s CVRs alone justify about +108% for top of search and +32% for the rest of search. Your own ratios will differ: read them from your placement report over the last 60 to 90 days.

How do Amazon placement bid adjustments work?

A placement adjustment raises the bid by a percentage you set, up to 900%, for one placement in one campaign: top of search (first page), rest of search or product pages (Amazon Ads). The base bid applies everywhere, and the adjustment adds to it for every keyword in that campaign.

Because the setting is per campaign, keywords that convert very differently by placement share one compromise. Group keywords with similar placement patterns into the same campaign, so one set of adjustments fits all of them.

Should I use “up and down” or “down only” dynamic bidding on Amazon?

Use “down only” unless your own placement data shows clicks are worth more than your adjusted bid. “Up and down” can double a bid wherever Amazon expects a sale, which is often where clicks already cost the most: top of search was the priciest placement in our data, at $2.14 per non-branded click at the median store (what Amazon clicks cost).

Why is my Amazon CPC higher than my bid?

Your campaign settings raised the bid that entered the auction. A placement adjustment adds up to 900% to the keyword bid, and “up and down” dynamic bidding can add up to 100% more. Amazon caps the CPC at that maximum effective bid, not at the keyword bid (Amazon Ads).

Should repeat purchases raise my Amazon ad bids?

Only for clicks that bring new customers, and only as far as you can measure the repeat orders.

If 20% of new customers buy again within 12 months, averaging 1.5 more orders each, one new customer places 1 + 0.2 × 1.5 = 1.3 orders. At $12.00 contribution per order that customer is worth $15.60, so break-even CPC at a 10% CVR rises from $1.20 to $1.56. The numbers are illustrative, and the assumptions matter:

• Repeat orders must carry the same margin and must not be orders the customer would have placed anyway.
• Amazon credits a seller’s Sponsored Products ad with orders placed within 7 days of the click, 14 days for vendors (Amazon Ads), so repeat orders months later never show in ad reports. Measuring them takes customer-level data such as Amazon Marketing Cloud.
• Shoppers searching your brand are often existing customers. A new-customer value on branded clicks counts the same customer twice.
• The extra contribution arrives over months, not on the day of the click.

How Laurence sets bids

Laurence prices each bid from what a click is worth to you and a careful read of the keyword’s CVR, and runs every hour, repricing each target as its new results come in. More on why Laurence prices each click from your margins and how Laurence bids each placement.

• Every hour, on three ad products: Sponsored Products keywords, product targets and automatic targets; Sponsored Brands keywords; Sponsored Display targets.
• From your margins: each bid starts from your average order value times your margin after Amazon’s fees and the cost of goods you enter (or the ROAS target you set), times the CVR it expects.
• By placement: Sponsored Products placement adjustments are recalculated nightly from each campaign’s own results by placement, and the Sponsored Products campaigns Laurence launches use “down only” dynamic bidding.
• Careful with thin data: a keyword with little history borrows from similar searches for the same product and bids conservatively until its own clicks build up.
• Branded and non-branded apart: once your brand terms are set, branded searches get their own campaigns, so neither one’s results distort the other’s bids.
• On the record: every bid Laurence sets is logged, and the platform shows each target’s bid and results.

How we measured this. Sponsored Products search-term reports (Amazon Ads API) for 20 US stores on the Laurence platform, August 6 to November 3, 2026, at Amazon’s default attribution window. Searches for a store’s own brand or its own products are branded; every other search, competitors’ brands included, is non-branded. Each figure is computed per store first, then summarized as the median across stores; no store is named.