1.5 years ago I bought an 05 525 for 3,800. BUT, it had the factory dirt suspenders revalved and resprung. 04 450SMR forks, wheels and a Penske triple clicker. Two tanks, two seats, the stock carb and an MX offroad carb and it only had 150 hours. For the bike you're looking at I wouldn't pay more than 2,500.