What kid would not want a Tauntaun suit? All the other costumes that make it appear that you are riding something pale in comparison to the beauty of this costume. I did find a guy who built his own and it doesn't look half bad.
I am still hoping that Lucasarts will release this as an official costume. I'll wait for the "deluxe" version, you know, the one that doubles as a sleeping bag like one that Kenner released for the action figures years ago (which I had).