I have a client that doesn't have a credit card and wants online backup. They only need to backup a Server 2012 Essentials box with about 20 GB of data. They have shadow copies, RAID 1, and an external local backup, so I'm not concerned with incrementals or anything fancy. I would like to back up Microsoft Azure, but I don't see a way around the credit card.
The only option I can think of is selling them Carbonite (I'm a reseller, so I could take a check) but it seems expensive since the server version starts at $599 a year. When ever I search for "no credit card required" it always turns out to be during the trial period and after that they require a credit card.