put urself in his shoes. he traded you something, (which you were there for at the time) and now you're offering him a low ball amount for what you gave him back... indian giver? just realize you made the two mistakes of not checking it out and then on top of it paying for it to get it fixed when he would've taken it back.. i think you feel u got the better deal and then when u looked back and realized how much u spent you felt as if you were getting less... u wanted the better deal, i can tell.