I've had this for 10+ years. I use it for a family domain. Everyone in the family has a user in the legacy G-suite, but it's really only set up as an email forwarder to their personal gmail account. No one logs in under it.

I'm not going to pay $6/user/mo just to do that, and I don't think any of them (all adults at this point) would either.

If I could get up an email forwarding without needing a paying user, I'd probably move to Business Starter for a user or two. I've not reconfigured any users in there for about 6 years, so I have to look to see if this is possible.