The Apple Store offers the factory-refurbished 2.4-lb. MacBook Air Intel Haswell Core i5 1.3GHz 11.6" Laptop (pictured), model no. MD711LL/A, for $849 with free shipping. That's tied with our refurb mention from 10 days ago and $100 under the lowest total price we could find for a new one. It features an Intel Haswell Core i5 1.3GHz dual-core processor, 11.6" 1366x768 LED-backlit display, 4GB RAM, 128GB SSD, 802.11n wireless, Bluetooth 4.0, Thunderbolt, and Mac OS X. A 1-year Apple warranties applies, the same as new units.