If you don't want to craft... drops/loot can be a decent source of income too. I found a rock i didn't need in AV and sold it for 40k. Some of those minions (which from what I have seen have a pretty high chance of looting from the coffers) can go for a pretty penny. Stop NPCing away all of those mats. Some of the higher level crafters would rather buy them for slightly more for the convenience rather than going out to gather it themselves.