The good affiliates know these networks, they know that they track accurately and they get paid on time. They don't know that about you or some new software you plug in to your site and promise to send PayPal payments with. For a few hundred bucks you can get on one of the first-tier networks with access to thousands of existing marketers. Integration is dead simple (put one piece of code on your "thank you" page to track the new signups, write a few lines of code to POST a commission through an API each month for the recurring part).