Yes, a friend of mine told me the quest to obtain them was a pain in the *beep*, so no wonder they're used as prizes and such. Noone is selling them atm (I checked) but if they did I'm sure their price would be sky high XD
The only wings I have for now are the floral ones and the artic ones. The artic ones are account bound, but I'm not sure about the floral
Oh, by the way, just found out another wings which are not account bound: the anniversary ones (not sure if that's their name, they are white, with some kind of ribbons behind) A shop was selling them a bit earlier
