JemJem offers the refurbished 3-lb. Apple MacBook Air Intel Core i5 1.8GHz 13.3" Laptop, model no. MD231LL/A, for $479.99. Coupon code "DISCOVER" cuts that to $464.99. With free shipping, that's the best price we could find for a refurb by $39 and the best price we've seen for this laptop. It features an Intel Core i5-3427U 1.8GHz Ivy Bridge dual-core processor, 13.3" 1440x900 LED-backlit LCD, 4GB RAM, 128GB SSD, AirPort Extreme (802.11n wireless), Bluetooth 4.0, Facetime camera, Thunderbolt and USB 3.0, and Mac OS X (it's unclear which version). Deal ends October 15.

A 90-day JemJem warranty applies.