I, a 130lb woman, could build this by myself in a day. Local materials would dictate what would be used for insulation and how it is put together.
Price breakdown (costs calculated at consumer level):
8-10' steel T posts: $80
100' x 7.5' roll of fencing: $150
3- 2"x10' pvc pipes: $60
Miscellanea, fasteners, and tarp: $40
Total: $330
Roll everything in the fencing and it's easy to transport.
Images done in paint.
Sorry for the chaos I found this contest today and threw it together. 
