Ultimately it appears that what you become is a Referral agent for them or a "bird dog" Any savings you are going to receive are going to actually be earnings or possibly further discount they offer you for booking your own travel through them.

"Referral agencies issue their referral agents a photo ID that the agent can use to receive travel industry discounts and courtesies from some suppliers. This annoys some people in the travel industry but, the practice is perfectly legal. The federal government specifically declined to take any action, saying this was simply an alternative way of marketing travel."

Now some of the places who have referral agents working for them do not charge you to become a referral agent - but may even offer incentives while others may charge you a lot more.