Hello Ownedcore.
I've recently found out that it is possible to sell big blizzard bear, when you have the item in your bags. By creating a new account in the same name, and transfering a character to the new account with the mount. After that the new owner will change the battle.net name and use the character how he like.
Screenshot by Lightshot
Price idea: 190 Euro's.
I will not be trading first, unless you have a high reputation in here, otherwise we'll use a middleman!
Feel free to contact me with any relevant questions you might have! I'm not online that much, so will be easier catching on the email / skype (Phone)