I have a Grasshopper 52" mid mount with a 20 hp kohler. Model # 220. I gave $6,400 for it 11 months ago and it had about 97 hours on it last time I looked. What would be a fair price to ask for this mower. I am well pleased with this mower it has given me no problems. I have changed the oil twice even though it probably didn't need it. I will probably look at a little larger mower to replace it . Maybe another Grasshopper or Exmark with a 61 or so inch cut so I can mow a little faster. It is in close to new shape maybe a few scratches. What would be the average market price?