Automated repricing covers two products that share a name and little else. Rule-based pricing applies YOUR policy automatically, channel markups, floors, scheduled promotions, deterministic and boring by design. Algorithmic repricing reacts to COMPETITORS, adjusting your price against other offers on the same listing, powerful in the narrow situations it fits and famous for the failure everyone eventually witnesses: two bots racing each other to a penny above cost.
Rule-based: the layer every multichannel seller needs
This is base-plus-markup running itself: one base price per SKU, per-channel markups absorbing each venue’s fee stack, floors that nothing may cross, and promotion overrides with end dates. Deterministic rules applied continuously beat manual edits applied occasionally, and the failure surface is tiny because the rules only ever say what YOU said. Unifystock ships this layer included, not as an add-on: markups, floors, and per-channel derivation on every plan.
The safety principle that carries over to everything else: floors first. A MAP commitment and a margin minimum encoded as hard floors make any pricing automation, dumb or clever, structurally unable to embarrass you, MAP compliance mechanics here.
Algorithmic: powerful, narrow, and honest about it
Competitive repricers watch a listing’s other offers and move your price to win position, classically the Amazon Buy Box, where multiple sellers share one listing and the box decides who gets the sale. Where it genuinely pays:
- Commodity resale on shared listings: same ASIN, many sellers, price-and-metrics-driven rotation, the native habitat.
- High-velocity categories where manual response is structurally too slow.
Where it does not:
- Unique products and own-brand listings: no competing offer on YOUR listing means nothing to race; demand-based pricing is the relevant craft instead.
- Handmade, vintage, one-offs: the Etsy-class catalog prices on story and scarcity, not on a box.
- Thin-margin categories without floors: the race-to-the-bottom failure is not hypothetical; it is the default outcome of two unfloored bots sharing a listing.
The failure modes, so you recognize them early
- The penny war: competing repricers undercutting in cycles until floors (or bankruptcy-grade prices) stop them. Your floor decides which.
- Repricing against a lie: reacting to a competitor’s error price or a hijacker’s fake offer, floors and minimum-competitor filters are the guard.
- Cross-channel leakage: an algorithmic drop on one venue syncing everywhere and violating parity or MAP elsewhere, channel scoping matters as much as floors.
- Metric blindness: winning the Buy Box on price while seller metrics were the actual lever; the box weighs more than price.
A sane adoption path
- Rule-based first: markups, floors, promotions, most sellers stop here, correctly.
- Add algorithmic ONLY for the SKUs that qualify: shared-listing commodities with real velocity, scoped to those channels, floors inherited.
- Review the log weekly at first: every automated change visible and attributable, the same observability bar as sync.
- Measure margin, not wins: Buy-Box share is a means; blended margin per SKU is the score.
Common questions
Do I need a repricer on eBay or Etsy?
eBay’s competition is between LISTINGS, not within one, so rule-based pricing plus sold-price research covers it; Etsy likewise. Algorithmic repricing is mostly an Amazon-shaped tool.
What should a floor be built from?
Landed cost plus fees plus minimum acceptable margin, the landed-cost math, and MAP where agreements exist. Compute it per SKU, then never let automation see below it.
How fast should repricing react?
For rule-based, in seconds with the rest of the sync; for algorithmic, minutes-scale response is competitive, the floors matter more than the speed.
Can repricing fix slow sales?
Price is one lever; dead stock has a ladder of them. A repricer aimed at a demand problem just finds the floor faster.
Policy that applies itself
Real-time price sync from $49/month with unlimited orders, and per-channel markups, floors, and promotions running continuously on the plans above. See pricing.