Selling stock assets is difficult to make a living from, I find anyway. I'm by no means a good marketer, or business man so maybe I'm doing things wrong, who knows. I don't make enough from selling stock assets alone, there are very few game developers in the world and cartoon style assets is a niech within a niech. Fortunately I can boost my income with private commisions and with that I can get by. I suppose I could make more in a normal 9-5 job but where's the fun in that?