I realise WPMU Dev is in business to make money, but have to say the additional storage plans seem a bit excessive if you just need a couple of extra GB for backups.
Due to various issues I've had trying to get Snapshop working reliably with S3 storage for clients site backups (various support tickets logged trying to resolve), I've had to buy the $10 a month plan for an extra 100 GB storage. After a couple of weeks of letting Managed Backups do its stuff, I'm around 2.5 GB over the free 10 GB storage. This means I'm basically paying $120 a year for 2.5 GB which doesn't exactly seem fair. Especially as if the Snapshot plugin was working properly I'd be able to use S3 storage costing around $3.5 a year for the same thing!
Surely there is a fairer way to charge for extra storage for Managed Backups? Like a pay-as-you-go model maybe?