I read a few posts here, that said that you could not buy the fuel prices module for the Go 720. Well, I couldn't buy it either, until I upgraded firmware to v7.481. When I got my Go I had v 7.221. After carefully upgrading so I would not lose VR (thanks guys for the warnings), I went back to Home to see what had changed, most of which were small tweaks. But then I noticed fuel prices was no longer greyed out, so I tried it, and they took my order, and it downloaded fine, and I tested it and it does work!