The thing with Prepaid Credit Cards you Purchase at the Retailer is they are Non-Reloadable. Since RLC likes collecting on a Recurring Monthly Basis makes the Prepaid Card almost impossible to use. I don't see why they do that as if the funds are not there when the Renewal comes along then the Members Account is Disabled or Cancelled.
Prepaid Cards work fine on Cam Caps as Memberships are on a Non- Recurring basis. It's up to the Member to Renew their Membership when they see their Previous Membership has expired.