Paid Community and Courses in Ghost

anyone using Ghost to sell courses and create community?

I saw this example and looked interesing, I wonder how he structured

Ghost has paid tiers. You could have course material on a specific paid tier. However, Ghost doesn’t really support having users on multiple tiers. (It can happen transiently when a user is in the middle of upgrading/downgrading.) There’s not a way for a user to buy access to course A and course B, but if you want to sell memberships for single courses (only) or “all the courses”, that’s an option.