Some yes, but the majority im sure its from botting or using those hacked accoutns to craft things. If you watch the AH as i have, and farm as i have, say, fleece and direwebs.. you would see that theres a direct correlation. The teleporting bots are obvioustly farming said items and oversaturating the market. Ive watched it and did nothing but farm fleece and direweb for 5 days (After work) And ive seen the same bots in the same places for days. God knows how much they have made in the ah, i wouldnt doubt they have crafting bots too at this point.
Not only that, when i put up some fleece its almost immediately undercut by someone, (usually by the same 3 retainers) i highly doubt a player is standing there 24/7 just to undercut me.
Given the sheer amount of resources they have, the above would not be a hard thing for them to do, they own the AH essentially.
