Seems like all the people who said that the "content drought" was to blame for all the moose selling were wrong. Here we are just 3 weeks after Emerald Nightmare unlocked and there are dozens of people spamming trade with carry selling for both mythic and heroic. And the dungeon finder tool also has 4 groups advertising for sales.
But I guess we should all pretend like this is fine and doesn't cheapen the experience of playing WoW at all. When someone logs on and is immediately greeted by a trade chat full of people tripping over each other trying to remove people from the pool of potential raiders and group recruits their first thought is "Awesome."
Free market go!