The proof engine
One tap. The real price.
PROOF doesn't compare three big-box stores. It indexes 4,200 — including resale, grey market, and direct-from-brand — then tells you which one is actually worth your money.
01
Snap or paste
Drop in any product link, photo, or barcode.
02
We cross-check
PROOF scans 4,200 retailers, resale and grey-market sources in real time.
03
You get the truth
A verified low, stock status, shipping, tax — and a confidence score.
