I'm always curious what records people have sold, only to realise that they have, perhaps, spectacularly goofed up...
I don't mean "20 years ago I sold Purple Mundi for a tenner and now it's worth £500" - more, you list a record for sale, sell it after two minutes and are then deluged with 100s of messages for weeks and months after and think "hmmm, I think I might have messed up slightly there!"
Apologies if this opens old festering wounds, I'm sure it'll be cathartic in the long run...