Buy.com via eBay offers the 3-lb. Lenovo ThinkPad X1 Carbon Intel Ivy Bridge Core i5 1.8GHz 14" Touchscreen Ultrabook, model no. 3448CXU, for $799.99 with free shipping. That's $83 under our mention from two weeks ago, the lowest total price we've seen for this model, and the best price we've seen for a Lenovo ThinkPad X1 laptop with a 128GB SSD. (It's also a current low for this model by $139.) Features include a carbon fiber housing, Intel Ivy Bridge Core i5-3427U 1.8GHz dual-core processor, 14" 1600x900 LED-backlit LCD, 4GB RAM, 128GB SSD, webcam, Bluetooth, 4-cell battery, and Windows 7 Professional 64-bit. Deal ends December 2 at 11 am ET.