Frequently asked questions

Can't find your answer? Email hello@lumipricer.com — we reply within one business day.

Getting started

How do I connect my store?

Through each marketplace's official authorization flow: on Walmart, you connect Lumi from Seller Center; on Amazon, you approve Lumi via Login with Amazon. You never share your password or API keys, and you can revoke access anytime from your seller dashboard.

Will Lumi change my prices as soon as I connect?

No. New SKUs start unassigned, and you can enable Preview Mode to see every change Lumi would make before anything goes live. Repricing only starts when you assign a strategy and turn it on.

How do I set my costs and minimums?

Enter unit cost per SKU (or bulk-upload by CSV). Lumi estimates marketplace referral fees and fulfillment costs, computes breakeven, and sets your floor at breakeven plus your minimum margin. Floors are hard limits — no strategy ever crosses them.

Strategies

What makes Lumi different from other repricers?

Most repricers follow the lowest price down. Lumi's SpiralGuard™ detects price-war spirals and declines to follow them, then recaptures margin when the market resets. Demand Windows™ prices by time of day instead of one flat price. Both are grounded in published pricing research.

Does SpiralGuard coordinate prices with other sellers?

No — and this matters. Lumi makes unilateral decisions from your rules, your costs, and publicly visible market prices only. It never communicates with, signals to, or shares data with other sellers or their tools.

Can I still use simple rules?

Yes. Floor guard (hold at floor, never follow below), Ceiling seek (climb when competition thins), and fully manual per-SKU control are all available alongside the named strategies.

Data & security

What data does Lumi access?

Only what repricing needs: listings, offers, prices, and order-level sales data via the official Walmart Marketplace API and Amazon SP-API. We never see your marketplace password, payment settings, or banking details. Details in our Privacy Policy.

Is my data shared with other sellers?

Never. Each customer's catalog, costs, and strategies are logically isolated. Your data is never used to benefit another Lumi customer.

Plans & billing

How much does Lumi cost?

Early-access plans start at $49/month — see Pricing. Founding members keep their early-access rate after launch.

Is there a free trial?

Early-access members get a 14-day free trial at onboarding, no credit card required. Join the list from the home page.

Can I cancel anytime?

Yes. Cancel from Settings; repricing stops immediately and your marketplace data is deleted per our Privacy Policy.