We don’t recommend using a fixed fee pricing plan when offering your online backup service. Your customer’s data will be growing daily, files are being added and databases will be growing, it’s easy to lowball your initial estimates. You’ll also need to factor in things like file versioning, and data recovery retention periods, these features are highly efficient but do add some additional storage overhead, as such the fixed fee approach is not dynamic and will lose you money.
My name is Ryan, and I am a software engineer at WholesaleBackup - a software development company with global partnerships that delivers cloud-based & self-hosted backup software in a reliable, secure, and simple way to Resellers, MSPs, VARs, and IT Pros for running their backup businesses. Let me know your thoughts on Twitter @wholesalebackup it helps me focus my future writings.