i have a 1990 fourtrax 300 and it is a really good quad. we have had it sence like 95 or so and it has plowed snow, drug our beech, and just generally been beat on (sadly with 1/4 the maintance that is should have had, i was young and didnt know any better and my brothers just didnt ever do it) and just last winter i had to rebuild the top end after it bent a valve. as far as what its worth KBB says 1830 but that seems a little high to me i would try for around 1000 or maybe 1500