Don't tell my son, but he is getting this teepee for Christmas. I found it on KSLClassifieds, (a Salt Lake City web site like craigslist). Melissa, the gal selling the teepee, actually makes them and her prices are GREAT - $50 for the biggest one. The Pottery Barn sells a similar teepee for $199.
It looks like the Pottery Barn uses a little higher quality materials but Melissa will sew the teepee out of any fabric that I want and come on it's for the basement!!!