Has anyone ever bought anything from you that you originally thought would be difficult to sell?

We had a really old chest freezer that we kept in our garage for years.  We bought a new one and thought this old one (even though it was working) wouldn't be easy to sell.  We just set it out on our driveway, and almost immediately, someone wanted it and paid us $50 for it.  Never thought that would happen with that ratty thing.

I've sold a broken turntable before. It's hard enough selling a good one. Collectors tend to be stingy if it's not a high-end model. But I believe the person I sold it to is someone who fixes them up. 

i sold a collection of 30 plants, people were practically banging down my door to get their hands on it 

Comic books and it's almost impossible to make a decent profit.