Looking at a used John Deer walkbehind. It has a 48" cut with I believe a 15 HP Kawaski. Not sure on the Engine but it has about 2400 hours on it. Its in decent shape and from what I have been reading a walkbehind will last a long time if you maintain it. It has about 25 hours use in the last 3 years. The owner has a log of all the oil changes and maintenance. He kept pretty good records and took care of it. What would it be worth and what would you offer?