I acquired a client (apartment complex) that I found use to service their own lawn needs, but they had an adminstration change and now prefer to hire this out (me!). I was walking thru their facility, which has a shop in it, and walked right into a very nice looking John Deere 797, 72" 7 Iron deck with a 29 hp Kaw. liquid cooled engine. The mower only has 226 hours on it. The administrator knows nothing of the history (when it was purchased) or anything but wishes to sell it. The mower looks great. How much should she expect to get for this mower. She knows msrp on new, like mowers run on up to 12/13K. What do you think?