You are a VERY wise person. You will enjoy the cold frozen ice cream like the rest of us residential fridge people. Be sure to freeze large ice packs if you'll be on the road and it will keep things cool like a cooler.
No real need for propane except for boondock. Even then if you boondock for a night you can always run the genny for a few hours to re-freeze.
As for the value, you can always put it on Craigslist.