I messed up a design that a customer ordered, I told them I will reprint at no charge. So I go and drop off the new shirts and say jokingly man those other shirts were sweet and I think my mess up (a totally different saying on the shirt from what they wanted) sounded awesome. The guy looks at me and says man you know your right, if you still have the shirts I would love to buy them from you. How great is that?? I just gave him the messed up shirts for free because I screwed up but its still cool that he was going to buy them at full price.