Used the code "Z0X576K3W513S?" to place an order for New XPS 14 Ultrabook, the order was accepted but there's a small print at the invoice sent to me:

"Technical difficulties are temporarily preventing us from calculating the final price of the system you have chosen. Please proceed with your order and a Dell Representative will call you shortly to confirm your final purchase price. If you are not happy with the final purchase price you will be given an opportunity to cancel your order, without obligation, before your order is finalised"