In the mail from Hayden Lindley (President): ClearSpace Modular Homes, Inc. recently launched a line of prefab homes. Delivery is only available in Texas right now.
According to their site:
Two additional models are planned: CabinSpace and CornerSpace.
The pricing for base modules is listed as $110-$115 sf, but they estimate a building cost of $130-145 sf for one of their stock designs.
ClearSpace is hoping to start their first project soon and will post progress via their blog.