You all know about how to do itsaku easily with a mage (http://www.ownedcore.com/forums/diab...4-inferno.html ([Farming] Wizard easy Items/Gold Act 4 Inferno)).
Well the thing is, even if the quality of the drops has been nerfed, Itsaku still drops (4 out of 5 times roughly) level 60 items. Which are salvaged into exquisite essences. Which currently sell for about 1k7g. With two items per run, that's 3k4 + 1k6 (quest reward) = 5k per itsaku run, which if you've got the technique pinned down are really fast to do (about a minute).
This isn't really suited for long, hard farming, and looks too complicated to script, but 3-4 runs can net you 20k fast and easy. (Though it really depends on the current price of essences on the AH).