thats a pretty sweet deal. make sure you ask questions though. like does it have any viruses. and see if you can't get the price down. 600 is a good deal, but just try to convince him down. it never hurts to try to save money. if he doesn't go down, then still buy it. it's a good deal if it's not broken or has any viruses. and tell him you want to see it work before you hand him the money. you don't want to get jipped out 600 bucks. that would suck.