If you make a backup with a tool like Borg that creates encrypted archives, then using AWS S3 glacier is the cheapest.
What's bad about it: if you ever need those files again, it's going to be VERY expensive to download them again, so it has to be treated as the "what if a nuke hits my city and all the local and off-site backups are vaporized" solution
Also: it's not recommended to directly host plain files, they need to be in an archive format with big chunks, as the API calls that are used to list them during sync are counted in a very expensive way
Israel is sowing the seeds of revenge in the Palestinian population.
The list of desperate persons that don't have anything to lose anymore is growing rapidly