For those looking for something at a decent price for up to 5TB, take a look at JottaCloud, which is supported by rclone, and then you can layer restic on top for a complete backup solution.

JottaCloud is "unlimited" for $11.99 a month (your upload speed is throttled after 5TB).

I've been using them for a few years for backing up important files from my NAS (timemachine backups, Immich library, digitised VHS's, Proxmox Backup Server backups) and am sitting at about 3.5TB.