Tony and Marti Belluschi are asking $1.1 million for the dune-top cabin, one of a few built in the Indiana enclave, to which he added a pergola on stilts that feels like it's flying above the dunes.

"When we left Illinois, we wanted everything paid off," they said. "The property was $50,000, the vehicles were $40,000, the two Amish cabins were $24,000, and the solar panels were $12,000." ...