I don't have a PSP, but I am interested in getting one pretty soon. I want to buy a used one if possible, and I was wondering what the market value is. I have a couple of friends who have PSPs who don't play them much and might be interested in selling them and I want to offer them a fair price for it. I've searched Ebay a few times and it seems like $90-110 would be a fair price, but I'm not certain. Thanks in advance.