I looked everywhere for these socks, and couldn't find anywhere in town that sold them.  Only place I know of is REI.  I keep seeing my backpacking buddies wearing these, and they claim they make a great sock for wearing with crocs around camp/sleep sock.
They are nice, but I just didn't think they were that warm, and they feel a little too loose.  I will stick to my wool socks for camp/sleeping in colder weather, at this price. I will more than likely wear them around the house, or under my rain boots, but will leave them home when I backpack.