It looks like I am being charged more than I should be, why is that?Updated a year ago

Be sure that your voucher code is successfully applied to receive your discount. If so, you should only be paying for shipping (if outlined in the offer) plus any additional upgrade options you may have chosen. After your code is applied you will still see an "Order Subtotal" for the retail price while checking out, but you will also see an "Order Discounts" which will be the appropriate amount for the Groupon or Living Social offer you took advantage of.