Friends of mine started selling the Grey Riding Camel. They sell it for gold, they will NOT accept payments that are against TOS.
I looked around here and didn't see links are against rules. so lmk if this is.
They use a bidding system, when you add them you give them your btag+a bid for the mount. They have sold this from 50,000-600,000. The higher your bid, more likely you will get invited when they have it up! This strat for farming and getting you the mount is totally legit.
They are Alliance only atm, I am not sure exactly how many realms they are currently accepting gold on. I bid 200,000 for this mount because who wants to farm those Figurines in Uldum with a 5% chance to get the actual mount?
http://www.thecamelhoarder.com/Tell them RHAZZER sent ya!