Costco has the AT&T, Sprint and Verizon versions of the iPhone 5s for just $78 on contract, a nice discount off the $199 you will be paying if getting the phone through the carriers.
Additionally, the iPad Air for Verizon is down to $520 and the iPad Mini with Retina is down to $420, $100 discounts for each.
With the significant discounts does come sporadic inventory, however, with T-Mobile devices only available in some kiosks, and just one iPhone 5c available for any carrier. Verizon is also the only carrier for the LTE models of the devices.