With True Reselling , the ISP essentially wholesales accounts for the store to sell. Stores may then package the service account with other services or just sell it outright. The big question with this arrangement is who services the account . Commission and referral arrangement for resellers vary greatly depending on local custom. In the US, ISPs usually pay participating resellers for every sign-up they get from that source.
Payment can be on a one-time or a recurring basis.
Paying on a recurring basis keeps the company involved, but involves much more accounting effort. Make sure that your billing system has the capability and that you can actually give your users credits or cut checks. Many ISPs have tried to trade services for referrals. This can work, but the key is, make them work for their reward . A sliding scale of incentives works well.