Invaluable!
I would like a currency filter but apt that it is fantastic & probably my most favored App.
Well known Apps like Honey and such haven't saved me a penny, this however has & even more so, lets one know if they are being ripped-off or cheated through false 'sales' 'promotions' that are merely price fluctuations giving the impression of a sale/bargain.
Kudos to this App!

Ottima scelta

Keepa is an excellent tracker for Amazon pricing. I haven't used other Amazon price trackers besides Honey, and I think Keepa blows honey out of the water.

It seamlessly integrates with the Amazon product page without being annoying, and allows you to setup alerts on product prices and lightning deals regardless of seller. The in-page graph makes it exceptionally easy to see if now is a good time to buy, and also makes it easier to see if its worth reviewing used options.

Additionally, Keepa requires a narrow scope of permissions which I highly value, only pulling information on amazon owned domains. This is far better than apps like Honey that request all of your browsing data.

I love this app and highly recommend it to anyone who uses Amazon.

値段の比較　増減　色々分かる素晴らしい

No funciona en la última versión de firefox para Android