TechRabbit offers the refurbished Apple MacBook Air Intel Haswell Core i5 1.4GHz 13.3" Laptop for $519.99 with free shipping. (Tanga charges the same.) That's the lowest price we could find for a refurb by $268, although we saw it for $20 less in May. It features an Intel Core i5 1.4GHz dual-core processor, 13.3" 1440x900 LED-backlit LCD, 4GB RAM, 128GB SSD, 802.11ac wireless, Bluetooth 4.0, FaceTime camera, Thunderbolt, Mac OS X 10.9 Mavericks. Deal ends August 17.

Note: A 90-day TechRabbit warranty applies.