Repricing for Walmart & Amazon sellers
Every repricer can race
to the bottom. Lumi climbs back up.
Undercutting is easy — and it's why repriced categories bleed margin. Lumi detects price-war spirals before they eat your profit, holds when following is pointless, and moves up first when the market resets.
Built for Walmart Marketplace first. Amazon in the same dashboard.
Buy Box win rate
68.4%
▲ 5.2 pts
Average margin
14.7%
▲ 1.9 pts
Margin recovered (30d)
$3,481
▲ vs baseline
Spirals avoided
23
this month
If every repricer does the same thing,
why would you switch?
Fair question. Most tools compete on speed at the same job: follow the lowest price down. Lumi is built around two strategies grounded in published pricing research — aimed at the money everyone else leaves on the table.
SpiralGuard™
Stop feeding the price war
Research on marketplace algorithmic pricing documents the pattern: repricers undercut each other to the floor, then the market resets and it starts again. SpiralGuard detects the loop, refuses to sell your margin into it, and times the recovery — so you're first back up, not last at the bottom.
Demand Windows™
Price for the hour, not the average day
Demand and competition aren't flat across the day — competitors stock out overnight, weekends surge, slow hours drag. Demand Windows applies airline-style revenue management to your catalog: capture margin in strong windows, compete hard only where it moves units.
See exactly where you stand — on every listing
No more tab-hopping between Seller Center pages. One view per SKU: your price, the Buy Box, the lowest offer, and every competitor by fulfillment type.
Buy Box tracking
Who holds the Buy Box, at what price, and why — with your win rate tracked over time on every listing.
Full offer landscape
Every competing offer, labeled WFS, FBA, or seller-shipped — because a $0.50 gap to a seller-shipped offer is very different from $0.50 to WFS.
Price position history
30-day charts of your price vs the Buy Box vs the lowest offer, with every strategy decision annotated on the timeline.
Margin guardrails
Floors and ceilings from your real costs, per SKU or per rule. No strategy ever breaks your minimum.
Built for large catalogs
Thousands of SKUs, bulk rules, CSV import/export. Designed for real stores, not ten-product demos.
Official APIs only
Walmart Marketplace and Amazon SP-API with seller-authorized OAuth. You never share passwords or keys, and you can revoke anytime.
Up and running in an afternoon
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1
Connect your store
Authorize Lumi from Walmart Seller Center or Amazon Seller Central through the official app authorization flow. No passwords, no API keys shared.
-
2
Set costs and guardrails
Import your catalog and costs, set margin floors and ceilings, and assign strategies per SKU, per category, or catalog-wide.
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3
Lumi runs your strategy
Prices adjust as the market moves — down when it wins something, up whenever the market allows. Every decision logged and explained.
Your data, handled properly
Lumi is built by Aurora PowerUp LLC to meet the marketplace platforms' data protection standards.
Seller-authorized access only
We access your account exclusively through official marketplace APIs after you explicitly authorize Lumi. Revoke anytime from your seller dashboard.
Encryption everywhere
All data encrypted in transit (TLS 1.2+) and at rest (AES-256). Credentials and tokens live in a managed secrets vault.
Strict data isolation
Each seller's data is logically isolated. Your catalog, costs, and strategies are never visible to any other Lumi customer.
Minimal retention
We collect only what repricing requires and retain it no longer than platform policies allow. See our Privacy Policy.
Get early access
Lumi is onboarding a limited group of founding sellers. Tell us about your store and we'll be in touch within one business day.
Email hello@lumipricer.com14-day free trial at onboarding, no credit card. Founding members lock in early-access pricing for life.