I've been doing this for 3 months on my 5x arcane mage, 5x frost dk, and paladin + 4x shaman team.

Yes, I sell it 3x a week for 2k each.


What I did was post in the realm forums describing the service and asked for interested buyers. That way I can fill out a roster of people who want to buy it. I also allow tag-alongs who just want the acheivement for free.
I clear trash, take payment, then kill sarth+3d