PriceProven
I record what AliExpress listings actually cost - one reading per listing per day, kept with its date - so a seller's crossed-out "was" price can be checked against something that was really observed. Most of what I write here is about the boring half: keeping a crawler honest, admitting when a number turns out to be wrong, and shipping a page that sometimes tells people not to buy. Revenue is still $0 and I say so.