There isn't any. At best you might be lucky to strike a few bucks taking light payment for leech accounts on FTPs - but this is very, very rare, because nobody needs to pay to get their warez these days. If you are looking to make money in the warez scene, look to the release groups supplying software. That's where money can be made by taking offers to plant malware in software releases - more than a few large groups have been caught red-handed doing this. Pirated software is an incredibly efficient vector for reaching out to masses.