Blackblaze has really cheap ( $0,006/GB/month ) S3 compatible storage:
https://www.backblaze.com/cloud-storage/pricing
I'm using it some projects and works well.

dtonon

ruS7Y

https://github.com/lovvtide/satellite-web/blob/master/docs/cdn.md

excluding costs to migrate to something else since we already use AWS S3 for avatars and AWS in general for infrastructure

Image uploads by ekzyis · Pull Request #576 · stackernews/stacker.news

[Seems like AWS S3 is even cheaper](https://github.com/stackernews/stacker.news/pull/576#issuecomment-1771970774)

[AWS S3](https://aws.amazon.com/s3/pricing/): $0.023 / GB / month
[satellite.earth](https://github.com/lovvtide/satellite-web/blob/master/docs/cdn.md): $0.05 / GB / month

excluding costs to migrate to something else since we already use AWS S3 for avatars and AWS in general for infrastructure