Show in advance how a booking is paid for (product/tokens/payment link)

In the member app, display a clear “Payment Method” preview before someone clicks “Book”: which product/punch card is being booked, how many punches this costs, and how many are remaining. If there are no punches/credits: immediately show that payment is required (incl. price) and that the user will be redirected to Mollie. This prevents surprises, error messages, and unexpected payment flows.