In our version v5.27.0, we made the bookable products system available, which we have now expanded with new features, so from now on it is not necessary to enter a price for the products.
In the Booking system, we can still pre-define available times that customers can later select when adding to the cart. With the new modification, it is also possible to book times without setting prices. This modification allows customers to settle the payment after booking, if necessary, based on an individual agreement, in person or by other means.