For starters you would need an Affiliate software platform software/backend and Affiliate promotion of some sort.

If you intend to use CCBill long term they offer an affiliate platform with their accounting software to the merchant sites processing payments with them. Many smaller niche paysites utilize the pool of existing affiliates that like the CCBill affiliate program. Unless your intention is to develop a group of niche paysites, and it would be economically viable to incur the expense of an independent affiliate program, this sort of arrangement would be the fastest and least expensive way to go.

You could also cascade your billing into other 3rd party credit card processors that offer their own affiliate programs too however you will incur additional administrative expense.

Plan B would be to get celebrity endorsement; Mitt Romney's and the Mormon Tabernacle Choir's as their favorite website to Fap at -- get all of Utah fapping -- not that hard to do .

Then you could go viral in the niche community -- get a MID and your own merchant account processing, being able to volume qualify for as well as economically justify the cost of the Affiliate end of things.