You can have a 5,000mi. sled that was ridden by a woman on nothing but groomed trails and no throttle jockying, or a 5,000mi. sled that was ridden by a hooligan. BOTH sleds can be cleaned up to look like new but the hooligan sled will have bushing/bearing wear, track wear, sagged out shocks etc. etc. Too many variables to say what mileage is considered "high" but I'd walk from ANY sled with 10,000mi. on the clock. Just my opinion.. Nice thing about being in southern PA. is that there a lot of 3-5 year old sleds with just a few thousand miles on them for sale all the time.