Some of my Cams stats...
cams.com does not convert for me...sent 15,000 uniques no sales.
AWE does not convert for me....sent 4,500 uniques no sales.
Videosecrets....sent 50,226 uniques to white labels...118 sales
DTI Japanese cams (the one I promote)....sent 34,400 uniques....110 sales and 162 additional sales
(also keep in mind I sent about 15,000 unique hits from traffic brokers to DTI...I am sure that traffic was far from targeted or worth much. So ratio is not a science here.)