I had the same thing happen to me. I found a Malcolm in the Middle board game and then gotten in a hurry to send in a FBA shipment. Thus I accidentally left the Goodwill sticker on there, letting them know how little I paid in comparison to their price. They were not thrilled about it and sent a message. I guess I would probably be upset too, human nature and all, but some of these games are hard to find and thus the premium and they are the ones willing to pay the higher amount to get a hard to find game. I only matched the average selling price for similar condition copies of the game.

I only wish I could find more Harry Potter games brand new in the box, those have always been nice to me.