Who has told a buyer that what you have is not what they need?

Sold a French Horn to a guy that was junk. Valves frozen, dents, flaking laquer. He calls me and asks why so cheap and I told him its not a player as is, dont even think of trying to play it. He was adamant on wanting it so I asked him what he was going to use it for..."Blue painted wall art with a yellow flower sticking out of it"...Sold! :D
Sold a few laptops with issues but buyers were fully aware of them and wanted them only for parts. Good enough for a sale.