UBL Used Book Tracking Manager 0.11.1-signed
UBL monitors Amazon for you when looking for used books that aren't currently available - the book might be completely unavailable or the price/condition just isn't right. We let you know via RSS - this extension makes it easy to add new requests.
This add-on has been preliminarily reviewed by Mozilla. Learn more
This add-on is not compatible with your version of Firefox because of the following: