Get the firm, final price(s) for a specific parking and date range, each with a direct checkout link (checkout_url) the user can open to pay right away — dates and product are pre-filled. Use this once the user has chosen a parking (typically from search) to confirm the exact price or to hand them a ready-to-book link. Returns one or more products (onepass/multipass/subscription) with total price including fees, VAT and cancellation terms; price_status is 'unavailable' when there is nothing bookable for those dates.