I'm going to vote, take it, it's free. I have one non-movable coop that we built out of 90% recycled stuff. Pallets for walls, a used roofing structure that I cut down to fit on the roof and garage door insulation in the walls. Built the nesting box out of recycled wood. Our biggest expense we the chicken wire we used for the outdoor run.
I did get one used.... It is a triangle shaped moveable coop that we used when the chickens we young. I don't really see us using it again until we get young chicks again though. Also it was in pretty bad shape and I had to do a lot of work to it before it was really use able. So it looks to me like you have yourself a really good deal there.