Market Gain Affiliate Network is a division of Gain Corporation, a privately held media marketing company with offices based in Delaware, New York and Michigan. We been in the CPA business since 2003, formerly as a partnership, then a full fledge “C” corporation. Market Gain performance-based affiliate network services thousands of CPA clients through our proprietary and up-to-the-minute tracking and reporting platform. Market Gain helps publishers maximize revenue for their inventory.