Hetzner storage has some fantastic deals which supports NFS mounting. Backblaze is also good and has a reputation of being very cheap but you should be aware th

Hetzner storage has some fantastic deals which supports NFS mounting. Backblaze is also good and has a reputation of being very cheap but you should be aware that the download has a cost if you download your backups often. Wasabi storage is also very cheap (s3 compatible)