Sorry to hear about your accident that has now become your opportunity. The Freightliner Chassis, Motor, tires, brakes, and instrumentation would be the package that you want to sell. How about the air levelers? Are they still functional? Any upgrades - Banks, Enhanced Suspension, Jacks, etc? Based on the total package that you want to sell, you should be able to come up with a fair price.
Remember, anyone wanting it will still have to transport it and get rid of the upper portion, so they will discount the bluebook off of the "good" stuff for that.
It sounds like it might be a great project for someone wanting to build customer or restore.
Colorado '15 Winnebago Forza 34T w/MKZ hybrid toad