JMS is right on on the parts prices. We priced out fenders for our 37 at 2 different AC shows. The first wanted $150 a piece, second wanted $200 a piece, so we decided to wait awhile. Went to an auction and bought 34 that was loose and complete w/fenders and back rest for $200. If you have the patience to wait, you can usually pick up a parts tracor a lot cheaper then the parts.
Tractor price depends on condition.