Okay, hmmmm good thing you were finally able to find success with CPA. Thanks for sharing the info that you were able to find along w/ the "Success with CPA" website link in your post, signature and avi.
It's all about a targeted audience. If you are selling a high payout diet formula link and are marketing to random people, about 1 out of 100 will have an interest. Then out of the 1, only a tenth of that percent will click through and then a tenth of that will buy. So for one $270 profit, you would need 10,000 hits.
never give up.. just continue experimenting .. some days are good , but at times it's the opposite. but never tire!