Theres 54 pages of crap from the front page post so i havn't trawled through it to see if this idea has been posted.
But, what if blizzard are donating half the price from the Celestial Steed to a charity such as Wish Upon a Star like they have previously done? To me this would make sense because i dont see why they would just sell a mount with no reasoning except money.
Doing this would still get Blizzard more money than i'll earn in my lifetime but would also make them look very good as a company if some of the money were to be donated to a charity, besides, a starry pegasus horse kinda fits with the 'Wish upon a star foundation'