Apple has added the 13-inch Retina MacBook Pro to the refurbished section at its online store
. Previously, only 15-inch Retina models were available. The 2.5GHz 13-inch systems come with a 15 percent discount, knocking $260 off the cost of one with a 128GB SSD, and $300 off the price of one with a 256GB SSD. No discount is offered for a 2.9GHz Core i7 model, but all three computers are available to ship in one to three days.