If you’re a maxed crafter or plan on becoming a maxed crafter then you will defiantly want to start running heroic dungeons to acquire Chaos Orb from the last boss. These orbs are used to make all epic crafted gear and some higher level blues. Chaos orbs will be a large factor in the price to sell these epics because if someone wants an epic piece crafted they can’t just give the crafter the mats and receive the item; they have to hope that they can find a crafter who actually has an orb.
I’m using my maxed Blacksmithing as an example below