One thing that always puzzled me is that when I buy a new PC or laptop I have to pay AGAIN for an O/S that I already had on the PC I just scrapped. I asked a retailer this question and was told that as the O/S was already pre-installed there was no way I could avoid this. There must be a built in charge and I wonder what they would say if I asked them to blow away the pre-installed version and deduct this cost as I already own a copy.