I think Docker for Teams is $15/month per seat. https://www.docker.com/pricing/

The enterprise hardened images license seems to be a different offering for offline mirroring or more strict compliance…

The main reason for CVE hardened images is that it’s hard to trust individuals to do it right at scale, even with CI/CD. You’re having to wire together your own scan & update process. In practice teams will use pinned versions, delays in fixing, turn off scanning, etc. This is easy mode