If you are a hardware kind of guy and have the time and temperment to fix stuff you can get great deals. Some of the cool things I have were from people who thought the items were broken and didn't have time to look into it so they dumped them cheap.

I don't think G5's are at their bottom of the value curve yet. Anybody have a clue how many G5's were built compared to G4 towers? You still see massive quantities of G4s around, but not G5s.