The SellerOS repricer is built around one rule most repricers don't have: it knows your true cost structure, so it can fight for the Buy Box without ever selling a unit at a loss.
Before the repricer suggests anything, it solves for the lowest price that still clears your target net margin — using the same two-regime referral math Amazon actually bills with. The floor is rebuilt from your itemized costs, not a number you typed once:
If the target margin is mathematically unreachable at any price — your variable costs alone exceed what a sale can carry — the engine tells you that plainly instead of suggesting a price that quietly loses money. Fix the costs, not the symptom.
Set strategy per listing — a hero product and a long-tail SKU shouldn't be priced with the same reflexes.
Undercuts the lowest competing offer by an amount set by your aggressiveness dial — from a token cent at the conservative end to ~3% at full volume-push. Never crosses your margin floor.
Holds above the competition, and when you already own the Buy Box comfortably it tests small raises toward your ceiling to grow margin without losing the box.
Tracks the lowest in-stock competitor exactly — the classic parity play for listings where price parity, not undercutting, wins.
Automation off for this listing. The repricer never touches it, but keeps showing you competitor moves and win probability so you can re-enable with context.
Every suggested price is scored by a model that weighs your price gap against the featured offer, fulfillment channel (FBA/SFP/FBM, Prime eligibility), seller rating, handling time and how many rivals are competing. You see the probability before you apply the price.
When the lowest offer has dropped repeatedly and steeply across recent checks, that's a race to the bottom — and the rational move is not to run it. The repricer flags the war and holds your margin floor until the market stabilizes.
When Amazon suppresses the Buy Box entirely there's no one to beat on price — so the engine prices upward toward your ceiling to capture margin while the box is dark.
Amazon's ANY_OFFER_CHANGED notification fires the moment a competitor moves. SellerOS reprices on the event — not on the next hourly batch, when the Buy Box has already changed hands.
Amazon is the source of truth; Shopify, eBay and Walmart follow it by rule — match, mark up, or undercut by a percent or dollar amount. When the repricer moves Amazon, every channel syncs.
Most repricers take a min price you typed once and forgot. SellerOS derives the floor from your itemized costs, so when your freight or prep cost changes, the floor moves with it.
No. Every strategy is clamped to the net-margin floor computed from your itemized costs — and price-war detection deliberately stops chasing serial undercutters, holding the floor until the market stabilizes.
Repricing is triggered by Amazon's own offer-change notifications rather than a polling schedule, so the reaction happens when the market moves — with every action recorded in the activity log.
Yes. Each listing has its own strategy and an aggressiveness dial from profit-max (shave a token cent) to sales-max (undercut up to ~3%) — and you can simulate an offer change to preview exactly what the engine would do.
Open any listing, drag the aggressiveness dial, and hit “Simulate offer change” to see the engine react — margin floor, win probability and reasoning included.
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