hey guys. i have a friend i ride with who is going to be getting an '05 or '06 yz250f this summer. before he does that he wants to sell his '98 yz400f. before you ask why he's not getting a 450, its because he's new to racing and wants to start in the 125 class. the bike has been maintained well, and is in very good working condition, and everything is in spec. the problem is he doesn't have a clue how much its worth. i thought you guys could help me out. thanks.