price?

Looking at a 1998 Polaris Sportsman 500 4x4, has rear storage compartment, 2500 lbs winch, plastic is in good conidtion, tires about 80 %, works well, has 1680 miles. Suspension is tight, no rattles any where. Battery 2 years old, front headlights do not work, he has note really looked to see why- he does not drive it after dark, so was not concerned about it, the owner is asking $3000.00, I am new to ATV's, is this a fair price?
I would also be interested in hearing from Polaris owners- what should I look for? what have you had trouble with?
rust