Once at the checkout, you may pay by credit card or debit card or via PayPal. Whichever way you choose to pay, you will receive an order number and a confirmation of payment e-mail. If you do not receive the confirmation e-mail within 24 hours, please contact sales@aepublications.co.uk to check that your payment has been processed. Your order will not be processed until you submit your payment details and the payment has cleared.