What does everyone generally think of purchasing "open-box" cameras? I bought a G6 and have up to two weeks to decide if I want to keep it or pay the difference and get an unopened one. The difference is about $50 Canadian. It was purchased a large (chain) Canadian brick and mortor electronics store.

I thought my camera may have auto focusing problems as I mentioned in the Canon forum but I'm not sure if it's the fault of the camera or the user (me).

Any opinions?