The Apple Store again offers the factory-refurbished 2.4-lb. Apple MacBook Air Intel Core i5 1.7GHz 11.6" LED-Backlit Laptop, model no. MD223LL/A, for $749 with free shipping. That ties our expired mention from four days ago as the lowest total price we've seen. (It's also $100 under the best price we could find for a new unit.) It features an Intel Core i5-3317U 1.7GHz dual-core Ivy Bridge processor, 11.6" 1366x768 LED-backlit widescreen LCD, 4GB RAM, 64GB SSD, AirPort Extreme (802.11n wireless), Bluetooth 4.0, Facetime camera, Thunderbolt port, and Mac OS X 10.7 Lion. Note that a 1-year Apple warranty applies, the same as new units.