This feature would be helpful in a situation where a merchant has variants but wants a maximum inventory available per variant. This could include limiting bookings at a premium or reduced rate based on the services provided (e.g. Lunch included vs not and/or VIP experience vs standard admission). In the admin of the Experiences app, the merchant would be able to not only set a maximum amount of any type of bookings per time slot, but they'd also be able to set a limit on the maximum amount of bookings per price variant.