what you need to do is figure what you think it is worth - and then upgrade it so much that your pretty sure he would say no. Tell him your willing to bring the price down a little bit - but i will not do it for less then _____. Barter with the guy, let him know your a busy man whos time is very expensive. If he doesnt appreciate what you are doing or feels he doesnt need to pay you tell him goodday and go back to liften them boxes.