I am about to sell my walk behind and I want to get an idea of what I can expect. There are not many used mowers available, and a decent market. Here are the specs... Its a Bobcat 48" mower. The mower is about 5-6 years old and the paint is decent. The paint is faded, but is still on the deck for the most part except on the outer edges where it has rubbed up on things over the years. Its a dual hydro mower, and both hydros pull strong. The engine only has about 1 full season on it, and its a beast. Its a Kohler Command Pro 20hp twin cyclinder engine. So bascially, a Bobcat 48" hydro fixed-deck walk behind that is about 5-6 years old with a 20 hp twin Kohler engine with one season. What should I be able to get for this unit? Thanks.