Lenovo offers its 3.2-lb. Lenovo ThinkPad 13 Intel Skylake Core i3 2.3GHz 13.3" Ultrabook in Black or Silver, model no. 20GJCTO1WW, for $454.30. Coupon code "SAV35THINKPAD" cuts it to $421.85. With free shipping, that's $227 off list and the lowest total price we could find. (For further comparison, it was $32 less three days ago, since expired.) Built to pass 12 military specification tests for durability, it features an Intel Core i3-6100U 2.3GHz Skylake dual-core processor, 13.3" 1366x768 (720p) LED-backlit LCD, 4GB RAM, 256GB SSD, 720p webcam, 802.11ac wireless, Bluetooth 4.1, USB Type-C, USB 3.0, HDMI, 3-cell battery, and Windows 10 Home 64-bit. Deal ends December 7.