Its a Gravely pm160z with 95 hours. Current owner got it in a barter and never used it. Just serviced and everything checks out. 18hp Kohler with 46 inch cut. Whats it worth? He's asking $1500. Whats the deal with the steering controls? He didn't know the year. How old is this mower? Should I consider this mower or spend three times this amount and get something brand new?