I remember one I got off ebay, didn't cost much, maybe $100, this is back in 2000, anyway when it came it had like a dart puncture right in the middle which made it skip 2 grooves, so I sold it for £200 I think, the guy who bought it melted some wax into the hole and made a new groove if you see what I mean, and it played mint! Now why didn't I think of that...