Instead of muddling through the topic myself, I decided it would be smarter to go straight to the expert. No one knows more about making money in the transmogrification market than Keelhaul of Proudmoore (US) -- or as he's affectionately known around the internet, the Mogfather. His goal was simple: Prove that the transmogrification gear market was profitable. Forty-five days and 1 million gold later, it's safe to say his point has been successfully proven.
But if you think banking a million gold in 45 days is remarkable, wait until you hear what he did next: He gave it all away.