I suspect that all I get will be a thinly disguised sales pitch for more consulting services, right?

This will be a full-tilt consulting session with nothing held back. You will not be “strung along” in a thinly disguised sales pitch for consulting services. The phone consultation will be helpful for you even if you don't become a subscription client afterwards.

If in the first 15 minutes you get the impression that's it's not worth it you can stop the phone call and will get a full refund.