I doubt he sold it you knowing it was broken, but it could happen. If it's been fine, then all of a sudden it crapped out, I'll give the seller the benefit of the doubt, being that he's a established member IIRC. Kinda leaves you wondering though, heh? I bought an orbital buffer from the swap meet for $10, went and bought $12 worth of bonnets, got home and it stopped working after about a half hour....I know it's not $500, but same principle...leaves you wondering. Funny thing is I could have bought a buffer, extra bonnets, and a mini vacuum cleaner for $22 at the store....
