When you signup for a developer account, you get 25GB, and with an unlimited plan, you get 1TB of default storage.
You can use BackupSheep default storage to store website and database backups.
If you exceed your allocated storage limit, you pay just $0.010/GB or $10/TB. Canadian dollars
Cloud server and volume backup storage usage are not counted toward your allocated storage limit because they are stored within your cloud provider account and not with BackupSheep. Different cloud providers charge different rates per GB for snapshot storage.
Bring Your Storage:
BackupSheep allows you to connect storage integrations so you can store website and database backups in your offsite storage. There's no storage limit if you use your storage.