You can work with Kingfin if your traffic is at least 1500 unique visitors per day, less than that makes no sense, then the income is palpable. I do not want to brag, but I have recently withdrawn 1200 euro and there is still some money left in my account. The trafic decides everything here, if there's no traffic - there's no money. I advise to follow the information on specialized sites - there are some good tricks there.