For reviewers
If you are comparing Amazon price trackers, these are the figures your table needs, in the columns those tables use. Each one names the page it can be checked on — nothing here asks to be taken on our word, which is the whole argument of the site. Corrections to [email protected] and we will publish them on /corrections.
The numbers, as of today
- Catalogue
- 9,691 products tracked, all on amazon.com, in US dollars. No other retailer and no other country. Browse them.
- Record
- 53,320 recorded prices from 623,381 price checks, the earliest on . One row per price change, not per check: a re-read of an unchanged price is not a second data point. The files.
- Update frequency
- At least every 12 hours per product, and every 3 for a price someone has an alert on, from Amazon’s own API under their licence — never by crawling their pages. Each product page prints when that product was last read. How a price gets here.
- Account required
- None, for anything. Reading, alerts, saved searches and the basket all work with no address, no sign-in and nothing installed; alerts are browser notifications set from the product page itself.
- Browser extension
- None. There is a read-only JSON endpoint —
/api/verdict?asin=— that answers with our reading of a product, for anyone who wants to build one. - Taking the data
- CSV, JSON and a PNG chart per product, no key and no rate limit. Amazon licenses its prices for display and not for redistribution, so their prices are on the pages and counted, but withheld from the files, which say how many they withhold. Take the data.
- Cost
- Free. We earn an affiliate commission on purchases, which never moves a verdict or a ranking. How we make money.
The one thing here that is not on the other trackers
Every tracker draws a chart and leaves the reading to you. This one states a verdict in a sentence — and then scores its own verdicts against what the price did afterwards, publishing the misses by name on our track record. If you check one claim on this page, check that one: a tracker grading its own homework in public is the claim most worth testing.
The second is the discount check: Amazon’s own crossed-out prices set against what we watched it actually charge.
What we do not do
- No prediction. Nothing here forecasts a price. Several newer trackers advertise accuracy percentages on future prices; we describe the record and stop, and say so on the page.
- No history before we started. Our record for a product begins the day we began watching it, and we never backfill from anyone else’s data. camelcamelcamel and Keepa have years on us for exactly this reason, and each of our pages prints its own start date rather than hiding it.
- No retailer but Amazon, and no Amazon outside the United States.
- No coupon codes applied at checkout, no cash back, no wishlist import. Nothing here runs on a retailer’s site or touches a cart.
- No crawling of Amazon product pages, which their terms forbid. Every Amazon price here came from their API.
Naming us
BasketPrice, one word, capital B and P; basketprice.com. Operated by MonacoWebPix — see the imprint. Quote any figure on this page or link any chart; if you want the underlying numbers instead, they are in the files at /data under attribution and a link back.
We have no logo pack, no boilerplate paragraph and nothing under embargo. If a comparison needs a fact that is not here, ask for it and it goes on this page rather than into an email only you can see.