As some players in the thread are saying, the mount isn't actually that hard to get, and in fact, many guilds who can raid fast enough to get it will sell it off for much less. But the more interesting story here is just the sheer amount of money involved. Kharmen says that she farmed the money herself, which may be true, but it seems surprising that players can pass that much money around without raising some eyebrows at Blizzard. Just what does it take to become a suspected gold farmer?
At any rate, Kharmen is thrilled that she got her mount, and supposedly Torment is thrilled that they're funded at least until the expansion (unless I'm completely miscalculating the amount it takes to keep a guild raiding -- just how much money do you need for elixirs and buffs these days?). Spending 20,000 on a mount doesn't sound like anything I'll be doing anytime soon, but then raising all of that money doesn't sound that appetizing either.
Thanks to everyone who sent this in!