Below are the companies that make and sell them. There are some videos on the pages of the aircraft in flight. Most of these are sold on ebay, the funny thing about christen eagle. That's the same one that cox sales, you can get it way cheaper then their price on ebay but, with a radio and all. With brushless or without!
http://www.art-tech.cn/english/index.asp
http://www.airmodel.cn/index.asp
http://www.hobby-lobby.com/pitts-bipe.htm