Watching a live is always free. You only pay if you choose to join the call and participate.
When you join a live, you are charged the creator's per-minute rate for the duration you are connected. You can leave at any time and billing stops immediately.
You book a session with a creator for a set duration. The total cost is the creator's per-minute rate multiplied by the number of minutes booked. Payment is collected at time of booking.
There are no subscriptions, no auto-renewals, and no recurring charges. You add credits to your account when you need them and spend them as you go.