Devin, thanks for the info! I will contact Envato directly, just to be sure.
As for WooCommerce, I tool a look at it (as well as a few others) and I think I may be trying to do something a little out of the normal. What I really need is a bit of a hybrid of Membership and Storefront capabilities. I imagine having a number of “Products”, and people should be able to buy any mix of products. In that sense, it is very much like a storefront. But the content is not downloadable, it is streaming videos, so access control is important. Most of the Membership/Access Control plugins seem to be about hierarchical membership levels and mostly recurring billing. I want mix and match access zones, and one time billing for each zone independently. And ideally each “member” would have a dynamic page listing the groups, or rather products, that they have access to.
So, getting back to Woo Commerce Groups, my understanding after a quick read is that it supports an unlimited number of groups, but that any one user can only be a member of one group. Am I misunderstanding that? I hope I am wrong, because the ability to make group membership purchasable as a Woo Commerce product is idea. The Membership addins seem to focus on a Signup page, and ideally each product would have a landing page with a promo video available to all, and a link for purchase, after which that user would see a list of links to the various chapters in the course, each as a Page with multiple videos.

Also, I am now thinking long term I would like to be able to have groups in groups. I.e. I might have a group that can access my Revit Training course, and then I have a company that buys a sight license, and I would need a user account for each me member of the staff, who are then members of the Company group, and the company group is a member of the Revit Training group.

In any case, I suspect I need to just install both on my test server and play a bit.

Thanks!
Gordon