SEO Lead Generator Needed For Ongoing Work (Weekly Payouts)

Hello, I am looking for a reliable lead generator that can create a constant flow of SEO leads from the U.S., U.K. and Canada for my business. Lead volume of 50 to 100 fresh, targeted leads per week is the goal. Although that is just to begin and the required amount is likely to increase after a few months. A trial "lead pack" of 25 to 50 leads will be required in order to verify the quality of the leads. Interested providers must specify their intended price per lead as well as their intended price per lead in bulk (100 leads, 250, and 500 leads per month). I am open to purchasing from more than one provider just as long as the leads perform. Any questions you may have just let me know.