<prompt> Human: Help me settle an argument. My dumb uncle says that if I donate leftover yard sale items, Ill get a HUGE tax break. Hes saying that if I donate an item I paid 50 for new, I can get a 50 deduction. He wont believe me that hes waaay off the mark. What is a more accurate deduction example?  <response>: I believe that if you want to legitimately deduct you use fair market value. Youre right in that a 50 item new, that you couldnt unload at a yard sale, is probably not fairly valued at 50 now. 