Rated 4.1 out of 5
4.1 Stars out of 5
by Firefox user 13946994, 2 years ago
Rated 5 out of 5
Version 2.9.7 works with the latest Firefox version 59.0.2. An icon shows up in the address bar that contains the price history graph. I've only tried it with a few Amazon products but so far it's working great.