Amazon A10 Killed Price-Only Repricing. Here's What Replaced It.

Amazon's A10 ranking algorithm does not reward the cheapest ASIN. Full stop. The 2026 update from Repricer.com confirms what sharp operators have felt for two quarters: seller authority, organic sales history, and off-Amazon traffic now carry roughly 35% more ranking weight than they did under A9's framework. Price still matters. But it has been demoted from lead variable to supporting cast. If your repricing strategy is still built on undercutting the next seller by $0.03, you are optimizing for a scoreboard Amazon stopped using.

What A10 Actually Measures

A9 was a conversion machine. Highest conversion rate, best rank. Price drove conversion, so price drove rank. Circular. A10 breaks that loop. It layers in five signal clusters that dilute pure price influence. First: seller authority. This is your account health score, time on platform, category depth, and return rate rolled into one composite. Second: organic sales velocity. Not paid, not PPC-inflated. Amazon now distinguishes between a sale that came from a Sponsored Products click and one that came from a type-in search. The organic sale gets more ranking juice. Third: external traffic. Send buyers from Google, TikTok, email, or your DTC site, and A10 treats that inbound signal as a trust vote. Fourth: click-through rate on search results. Your main image, title, and review count do work before the listing even loads. Fifth: impressions relative to sales. High impressions and low conversion now penalizes rank faster than under A9. Each of these five clusters interacts with price. None of them is price.

The Operator's Decision: Reprice to Margin, Not to Match

Most automated repricers default to competitive parity. They watch the lowest FBA offer and shave pennies. Under A10, that behavior has a cost your P&L absorbs but your rank does not reward. The right decision is to set a landed-cost margin floor and let the repricing engine move within a band above it. Not below. Here is the reasoning. If your landed cost on an ASIN is $8.40 and your target NetPPM is 18%, your price floor is $10.24. Any sale below that erodes margin without delivering the organic velocity signal A10 wants. A $9.99 sale from a PPC click actually hurts you twice: compressed margin and discounted ranking credit. A $10.49 sale from an external traffic source helps you twice: margin intact and elevated ranking signal.

Three Moves to Recalibrate

Move one. Audit your repricer rules by ASIN cohort. Group SKUs into three buckets: hero ASINs with strong organic velocity, mid-tier ASINs dependent on PPC, and tail ASINs with low sell-through. Apply different floor logic to each. Hero ASINs can tolerate a higher floor because their authority signal already supports rank. Mid-tier ASINs need the margin headroom to fund the external traffic that builds authority. Tail ASINs might need liquidation pricing, but that is a clearance decision, not a ranking decision. Treat it differently. Move two. Redirect 10-15% of your Sponsored Products budget into external traffic acquisition. Google Shopping, creator affiliate links, email campaigns to your existing customer list. Track the external-to-organic conversion ratio in your SP-API data pulls. You want to see organic session percentage climbing week over week. That is your A10 health indicator. Move three. Tighten your click-through rate inputs. A/B test main images monthly. Rewrite titles to front-load the search term that matches buyer intent, not the keyword with the highest volume. A 0.4-point CTR improvement on an ASIN with 50,000 monthly impressions translates to 200 additional clicks. At a 12% conversion rate, that is 24 incremental organic sales per month per ASIN. Multiply across your catalog.

The Margin Upside Nobody Talks About

When you stop racing to the lowest price, something counterintuitive happens. Your average selling price rises. Your ad spend efficiency improves because organic rank carries more sessions. Your return rate often drops because bargain-hunting buyers are less loyal and more complaint-prone than intent-driven buyers who found you through a direct channel. One brand running 1,200 ASINs in home goods reported a 2.3-point NetPPM gain within 60 days of shifting from competitive-floor repricing to margin-floor repricing. No new products. No new ad spend. Just different rules in the same repricer they were already paying for.

Three Questions to Pressure-Test

What percentage of your catalog is currently repriced below your landed-cost margin floor? Pull the report today. If you disabled your repricer tomorrow, which ASINs would hold rank on organic velocity alone? Those are your authority anchors. How much of your monthly traffic to Amazon listings originates from sources outside Amazon, and is that number growing or flat? Set your margin floors by Friday. Let A10 do the rest.