I am thinking about selling my Exmark 36' walk behind. The machine is the 12.5 Kaw. belt driven model with a roughly 175 hours on it. . The mower also comes with a GrassGobbler bagging unit. The mower was used primarily on my own yard and a few small residentials, it's in very good shape. I paid $2400 in 2002, does anyone have an idea what the resale value would be? Thank you for your help.