for those who think they got free overnight shipping, a section in the dell website reads:
Configuration, pricing, tax, shipping and monthly payment information above is estimated and presented for your convenience only. All pricing, shipping and monthly payment information is subject to change without notice. Final order specifications and amounts, including tax and shipping, will be communicated following receipt of your online order. Dell will not be responsible for typographical or other errors or omissions regarding prices or other information. Products displayed are available to US customers who take delivery in the 50 United States. All sales are subject to Dell's Term and Conditions of Sale.