First off I meant to say $38.00 a square foot. Not 100 sq. ft.
http://www.designhomes.com/
http://horkheimerhomes.com/
I have a summer home in the country and there are literally hundreds of these unit's all over by me. I have lots of land, with well, electric, and septic. So I am gonna just drop one on.
Horkheimer is the cheapest, I found a great house for around $80K, but there are extras, garage, basement, deck, etc. His prices are negotiable.
You can buy it by the foot, so if you need an extra 10 feet you just order it.
Also some are 16 feet wide and you put two together so it is now 32 feet wide.
My understanding is stick built is made on sight (appreciates)
Modular is built in a factory and has a wood frame (appreciates)
Trailer is factory built, is less than 16 feet wide, and has a metal frame (depreciates)