Offer them a rebranded site much like Open Drive for resellers to sell your service. A wonderful example of a great reseller service is resellerspanel.com. This is hosting, but the concept of a free reseller account would be wonderful. Charge your wholesale price per plan and offer resellers themselves a 20% off Personal and Business account for being a reseller. The rebranded website would be there company and you would simply make money off of each transaction or sale. I would personally love to be a reseller. I know I would sell accounts.
Rebranded Reseller Service