Useless Rated 1 out of 5 stars

Just installed and tried out this add-on. The "low" prices that it displays from Amazon.com are much higher than what I get by doing a direct search myself: $87.11 versus many prices going down to $2.07.
Same story with AbeBooks: $71.55 versus several prices going down to $5.54.
Uninstalling it right now.

Tab shows for me v38 Rated 5 out of 5 stars

Not sure how to respond directly to previous review, but want it to be known that tab still works for me--I have FF v.38

Rated 4 out of 5 stars

Very simple - says what it does on the tin, but I have suggested in their survey they add UK priced booksellers too. It's only dollars at the moment (MAR 2014) so not really any use to me

Rated 5 out of 5 stars

This is another good shopping/ecommerce add-on

This review is for a previous version of the add-on (0.1). 

Rated 5 out of 5 stars

More affordable books and supporting literacy at the same time? Brilliant, and it works exactly as advertised. Count me in.

This review is for a previous version of the add-on (0.1).