How Do You Measure the Health of a Paid Online Course?

Paid communities are easier to run because people pay for something, and they're going to show up. You have a bit of a leg up when you have a paid community. I think we focus on transformation, but we forget why we actually have this community in part as part of like, the value pro so i do measure transformation,. Are they feeling supported? Also, are they feeling connected? And also, are they feel supported by the leaders of the community? Could be like your moderators, or could be your team that you hire. So how do you know those things? I think surveys are the only way to do it.