We bought one from a local guy who bought the plans and sold them locally. Ours turned out to be too small for our Easter Eggers, just right for our Bantams. The EE's preferred to sleep on top, it was just too cramped for them inside.
So, we made a larger coop (see my BYC page) for all of them. I've since noticed that our Catawba has a leak when it rains, you may want to carefully watch yours for a leak.
Our girls are allowed to free range in our backyard, so we never moved ours around much, it was just easier to open the door and let them run free in the day.