For a moment, I thought you were talking about the Intel-based Mac Pros, because I would've asked if you had a 2009 model I could buy (not that my 2008 isn't perfectly fine as is).

But G5s are good too. If any of them are Quad G5s, however, I might be interested (I have one, but it needs an LCS (Liquid Cooling System) overhaul).

c