The hours sound awful low? Does it have an hour meter on it? I put one on mine when I first got it. It is handy to know for oil changes. Mine is about 3 years old and only had to do normal maintenance so far. Sounds like a decent price for it if it doesn't have a lot of hours on it. Changing the oil on regular schedule is very important. Also are there any extra parts like repair gaskets, extra fittings, and filters included? They came with them when new. does it have an extra moisture filter on the the discharge side. All these this add to the value. Should also have at least one fill hose. Good luck. I don't do Face Book so sorry if I covered info in the ad.