With respect to the rolling feature, you'd want the premium model to have an inner sphere with ballast for keeping its contents level. That way you could simply harness it with an exterior hoop-like structure and pull it behind a truck to move it to a new Orb Park or restore it to its home position after a hurricane or rapture or whatever.

The earthquake mode would be the most fun, as it could bounce higher with each crest of the lateral wave. The home would be able to double as a boat, and could be towed by a jet ski or other convenient motorized device.

But safety and convenience are just the beginning. Mobile Home Croquet would become popular, with gigantic pneumatic cannons firing the buildings at one another and St. Louis Arc-like wickets.

I know somebody will point out that geodesic domes already posess some of these benefits, but those tend to be less mobile and not completely spherical with one notable exception (see link).

The obvious way to market the pre-fabbed accommodations would be in gigantic gumball machines. The color and interior would be left up to chance, and people would save up to collect all of the different flavors.

Also, there would be optional concave foundations available for customers who wanted to build on mountaintops or other positions of unstable equilibrium.