Aren't they already with all those trains they sell?

Don't know how those 309 train DLCs install and work, never played that game...
So personally, I can't say much about how do you use this on steam.

Hey, if people are willing to pay for it. The few WOW obsessed friends I have probably already do, they grab just about everything released for it.

Speaking as someone who used to build accounts (EQ/WoW) and sell them it seems like they are just getting into the fray, they can not beat the people who sell gear/char's so why not join them.

Wait, wha......

Rather incongruous anecdote. I daresay a lot of the people who bought the mount are the ones who play WoW fairly casually (10 hours a week or w/e) -- the game actually has a lot of older subscribers with jobs/families, etc. where $25 isn't a big deal to them. The more addicted are the ones likely to complain that people are able to buy a fancy mount with cash because they are the ones who spend 40+ hours a week farming for said mounts through in-game achievements.
Odds are WoW wouldn't be anywhere near as successful if the large part of its subscriber base were 'brainwashed zombies' as opposed to casual gamers. It's the lesson they learned from EQ: make it accessible to Joe Accountant and Betty Homemaker and watch your profits increase tenfold.

Only that's wrong. The majority of the cost for mounts and flying mounts comes from the price of the training, actually being able to use the mounts, as apposed to purchasing one. The page actually says that it will only fly as fast as your riding skill.
Also it says you need one of the fastest mounts for this mount to also go fastest, which take an enormous amount of dedication to get.
So really, your not actually getting anything , your just forking out $25 extra for a reskin. The only use for this i can think of is people levelling loads of different characters. I wouldn't really say the gold saved adds up that quickly either.

I wonder what will be next. Selling achievements/titles?
"...and if you buy all achievements from Blizzard store, you will get Feat of strength "Blizzard's Slave" and the unique title "the Slave" for all characters on your account! BUYZ NAO!!!1"

I wouldn't offend anyone here playing WoW. But hey, this on-line shit is full of [redacted]....