The script to trigger my paperless export: docker compose exec -T webserver document_exporter ../export

This is run via a crontab entry every night, and exports to a mounted directory. Said directory then is included in my nightly restic backup, scheduled via resticprofile.

It is a monthly price you pay for the storage, traffic included. Breaking it down to hours would make sense if you keep the storage for a short time only. A backup you want to keep indefinitely of course.

The cloud could be your offsite backup. Using restic and running a regular paperless export is the way I do it. Nightly export, followed by a backup to Hetzner.