Ke111 -
I also wanted to jump in here and enhance what both Chipmunk and Smaxor mentioned. Places like COPEAC and Hydra are simply brokering and if you look you can get better pricing directly from lenders and aggregators themselves. Additionally, going direct gives the benefit of having the site owners pay you what your traffic is worth - it's not jumbled in with everyone else's traffic for a set rate through a large network.
I can definitely vouch for the strength of LeadFlash's deals (some of the best), but I wanted to recommend my own company, EmpiricAds. Similar to LF, we are primarily focused in payday, we own all of our sites, and have built a wide variety of the best short form payday loan deals in the industry.