Dipscout

Lists AliExpress products with a real price drop, detected by our price history in the last 7 days (the seller's 'was' price does not count). Each product includes discount.certainty: 'verified' means the drop is proven by the time-weighted median of our readings and MAY be presented as savings; 'none' means there is no discount that can be claimed. The seller's 'was' price on the listing does not support any discount here. Quoting the percentage without the certainty next to it misinforms the reader.

Observed price series for an AliExpress product. Accepts the itemId or the product URL. Also returns the number of readings and days of tracking: with too little tracking there is no basis to claim a drop, and the response says so explicitly.

Products whose price dropped at least 15% and $3 below the TYPICAL price of the last 14 days (median weighted by how long each price lasted — a flash sale only counts for the hours it ran), or that hit their lowest recorded price. Requires 3 days of tracking. Each product includes discount.certainty: 'verified' means the drop is proven by the time-weighted median of our readings and MAY be presented as savings; 'none' means there is no discount that can be claimed. The seller's 'was' price on the listing does not support any discount here. Quoting the percentage without the certainty next to it misinforms the reader.