This is Clayton Homes' "ehome" a super affordable successor to their more upscale green i house.
It comes in three models 900 sq. ft, 990 and 1140.
It sells for between about $40,000 and $65,000 depending on what model and options you get.
Be sure and upgrade to 2 x 6" walls and better insulation, if it doesn't come standard with that in your area.
Notice the unique roof line, but it's the interior ceiling slant which brings lots of light into the house.
Here's a link to my review of the ehome with a link to my high resolution photo set on flickr: