I installed Barorama, and easily changed the arguments to load the fastpricecheck.com site. I'm not sure if OP knows, but the part where it has the google URL is actually a text box...you can change it to
http://www.fastpricecheck.com/GetData/HTML/!###! to make it work with that service.
This combination works, but the barcode reading require a very clear and bright image to work.
Just thought I'd let you all know.