Course on How to Do a Webinar and One-Time Course Purchase vs. Membership Site

I believe I heard Thomas say something about a course on how to do a Webinar, but he had not published it yet. I would very much like to see this course because I am preparing to begin webinars to promote my online courses. Does anyone know about this Webinar course?

Also, I would appreciate any advice on the pros and cons of doing a one-time purchase course for say, $497 vs. a monthly membership to the course for $47 basic access, $97 email questions to me and get a weekly group coaching call, and $197 for a limited mastermind group. The course is here: TheGigCoach.com

I recently joined a membership with a guy who says monthly membership is the only way to go, but I’m having second thoughts about that approach. Any advice on Membership vs. One-time purchase would be greatly appreciated. Thanks!