I'm looking for two cold storage providers for "backup of my backups" with no min. TB cost.

My needs are tiny from r/datahoarder standards – only ≈70 GB (as of now) per provider. It will be long-term, personal data, recurring, no public access (I hope even I don't need to access it). So, I need true PAYG. I won't want to use services like Wasabi that have minimum storage buys (borgbase, rsync.net don't work either).

I tried AWS, but their whole interface, KYC, hard-coded region, and IAM setup etc were an absolute nightmare (have requested a/c closure after KYC). I also tried OVH, but I've been waiting three days for account approval with no word.

I use B2 and R2 as my primary backup destinations (these are the backups that will be copied/appended to those cold archives), so I'm looking for different providers and also cheaper than those two. Any suggestions?