Beware on doing it yourself, you have to find the holy grail of programmers for that. The programmers that are spammers already they know the value of the project that they would be creating for you. Most will gouge you with a ridiculous price. Your best bet is to find a foreigner who is highly skilled in C#, http requests, and doesn't know that much about the world of affiliate marketing. Someone who is still wet behind the ears.
Actually if a programmer puts a price based on the potential value of a project you should block him as soon as possible, doesn’t matter what kind of project it is the price should always be based on the quality and skill needed to get the project done