How it works
Retailers make mistakes.
We're watching when they do.
A price error is a listing gone wrong: a $600 water heater keyed in at $60, a coupon that stacks twice, a clearance flag applied to the whole catalog. They last minutes to hours. Finding them by hand is luck; finding them with monitors is a pipeline.
We monitor
Automated monitors watch product prices across 40+ retailers (clearance sections, category feeds, and price-history APIs) around the clock. Community spotters submit in-store finds with SKUs and shelf photos.
We detect
Every price change is scored against the product's history. A TV that drops 15% is a sale. A TV that drops 92% below its 90-day floor is a price error, and it gets flagged in seconds.
We verify
Flagged deals are checked before they hit the feed: is it in stock, does the price hold in cart, is the seller legitimate? No dead links, no fake strikethrough prices.
You get there first
Verified errors go out instantly, on the live feed and to alert subscribers. Errors get corrected fast, so minutes matter. Checkout speed is the whole game.
Where the signal comes from
Online price drops
Price-history tracking flags listings that fall far below their historical floor, the signature of a decimal-point slip or an automation gone wrong.
In-store markdowns
Store-level inventory systems expose hidden clearance: items ringing up at a fraction of the shelf price. We surface the SKU so you can scan and confirm.
Community spotters
Deal hunters in the aisles submit finds with SKUs and receipts. Submissions are cross-checked against retailer data before they're published.
Every deal gets a grade
Almost certainly a mistake, 85+ error score. Priced far below the product's historical floor or below plausible cost. Move immediately.
Suspiciously deep discount (70-85 score). Could be an aggressive markdown or an error, verified live and worth a fast look.
Intentional but extreme markdown: hidden clearance, penny-adjacent items, store-level dumps. Not a mistake, still a steal.
Questions people ask
Will the retailer honor a price error?+
Sometimes. Online orders may be canceled before shipping, but many slip through, and in-store prices that ring up at the register are typically honored on the spot. That's why in-store errors with SKUs are the most reliable wins.
Why do deals disappear so fast?+
Retailers monitor for their own mistakes and usually correct them within minutes to hours. When our re-check sees a corrected price or empty stock, the deal is marked expired automatically.
What's the difference between a price error and clearance?+
Clearance is intentional, a retailer clearing inventory at 50-70% off. A price error is a mistake: a misplaced decimal, a bad feed import, a coupon that stacks when it shouldn't. We grade every deal so you know which is which.
How do in-store SKU deals work?+
Take the SKU from the deal card to your local store, scan it at a price checker or ask an associate. Stock and pricing vary by location. The listed price is what our data shows at time of posting.
Ready to catch the next one?
The feed is free. Alerts make it instant.