I wouldn't necessarily say that the seller is being dishonest. He may be one of several people who have owned it and was misled by the guy before him. The 2-speed is kinda blatant though, since it wasn't (and still isn't) available in that size skid steer. If the unit were what the owner says it is, I could get around $12k out of it here. You're going to have to judge by condition and driving it. Average hours would probably be around 3000, so use that as a baseline to work off of. With that many hours $9-10k would be more accurate. Your region may differ. Look at similar listings in your area on MachineryTrader to get an idea of what is typical.