http://www.horizonstructures.com/coop.asp
This is the one we have. We got it in kit form from an Amish ebay seller. It cost us $1285 delivered. Dh and I took 1.5 hours to build it. It was the easiest thing to put together, ever!
Opa, if its like the one I saw its not insulated. It was still really nice and I didn't think the price was that out of line, especially given all the windows.