This may have some useful information for you...have a look through the links - it has costing info and videos on the building process...
links:
http://www.quik-build.com/quikHouse/99KHouse/99K_intro.html
http://www.quik-build.com/quikHouse/QH_main.htm
http://www.quik-build.com/quikHouse/QuikHouseBooklet.pdf
http://www.quik-build.com/quikHouse/QH_video.htm
