There's no shortage of impressive new prefab house designs out there these days. Some of them, however, (looking at you, Philippe Starck-designed eco-villa and ultra-luxe Vipp shelter) seem to defeat the romantic notion of a cost-effective modern prefab, asking upwards of half-a-million dollars for the basic model. To keep the prefab dream alive, here are some relatively affordable options that don't sacrifice style. One can even withstand a Category 5 hurricane. Now that's priceless.