They do not charge your credit or debit card until your goods are ready for dispatch. If one or more item(/s) is placed on backorder because they are out of stock, your card will only be charged once these items are back in stock and ready to be sent. Please note that you are not charged at the point of placing the order and failed payment of any kind will only become apparent to them when the items are ready to be dispatched, in which case they will contact you.