I started doing this about two weeks before patch 4.01, and I manage to sell at least a dozen bags at 13-15 gold each every day. Now mind you this is on Gul'dan which is a low Alliance high horde server, with over all low population.

I imagine this well go up big time when Cata hits.

In fact, I've been making more gold off of it, then I have Frostweave bags for the last two-three months.

Stephen