Phattwoohie

Looking at buying a used ATV and was curious as to what the average lifespan is on one? I was browsing ebay and I saw one with 120 hours on it. I'm not sure if that is a lot or a little? Saw another with 1400 miles for a reasonable amount of money and another that looked better but had 4200 miles on it. How many miles or hours is too much? I'm looking at 4x4 ATV's for carrying deer stands etc into the woods and hopefully carrying deer out