A really good money making as a skiller is to smith rune bars to rune 2h and sell them to pawn shop, if you have the efficient production relic for smithing, then you have a chance to make the item without using up the bars.
Also if you have 77 Runecrafting then you can make some blood runes for cash.
Farming herbs and selling them to players is also a good money making but that'd depend on supply/demand for the herbs.
