I once posted classic II for $20 in Craiglist. I wanted to gauge the interest in older computer equipment. I couldn't believe it when some guy offered $50. Man, they wanted that computer in a bad way, immediate pickup. When the guy came over he was bubbling with excitement. $50... who am I to judge.

Another time someone posted an AIO for $100, I forget the model. Turns out he was some kind of local TV producer, nice guy, artsy type. He originally paid a $100 for the computer. I think he bought it as a conversation piece, and decided to sell the computer when the novelty was gone.