MegaMacs offers the refurbished 2.4-lb. Apple MacBook Air Intel Ivy Bridge Core i5 1.7GHz 11.6" Laptop, model no. MD223LL/A, for $529.99 plus around $22 for shipping. That's $454 under the lowest total price we could find for a new unit, although we saw a refurb for $13 less in February. It features an Intel Core i5-3317U 1.7GHz Ivy Bridge dual-core processor, 11.6" 1366x768 LED-backlit LCD, 4GB RAM, 64GB SSD, Facetime camera, Thunderbolt, USB 3.0, 802.11n wireless, Bluetooth 4.0, and Mac OS X 10.7 Lion. Deal ends July 1.

A 30-day MegaMacs warranty applies.