Okay, so you have received all of the money. Contact the buyer, and ask him what the issue is with him taking the camper home. Tell him that unless he comes and takes it home you will start charging him a storage fee.
“ask him what the issue is with him taking the camper home.”
Since he says he can’t haul it due to car problems, I’ve thought about offering to take it to him, but the problem is that he lives at least an hour or possibly two away. He just might agree!