I once had a buyer that I purposely kind of talked out of buying a game.
They were pretty local though, and somewhat inexperienced and seemed kind of needy when setting up the deal.
So when they came to try the game out, I made a bit more emphasis on any negatives, and made it clear that I was perfectly fine if they decided not to buy it.
They decided not to buy, and I was kind of glad, as I think they would have been bothering me with tech support requests.
Or the game would have problems that they would blame me for, and being so local didn't want to deal with that.
Ended up selling it to someone that is a collector and has more experience with pin ownership.
It all worked out...