Jottacloud is what I want to use. Unlimited storage for ~100€/month
Close behind is 1fichier for 2€/TB/month or 12€/TB/year, but they are in France and "uptobox" (a similar provider) was shutdown by the US on French soil because they allowed providing links to the files.
You can probably find others in the list of storage systems supported by rclone
Thank you! I implemented some of the feedback (haven't pushed yet) and responded to the comments. Learned something 👍