Best Buy offers the 5.5-lb. Lenovo Essential Series B570 Pentium Dual-Core 2GHz 15.6" Widescreen Notebook in Silver, model no. 1068A8U, for $349.99. Shipping adds $14.99, or choose free in-store pickup. Even with shipping, that's the lowest total price we could find for this model by $254 and the least expensive laptop we've seen with a new Pentium Dual-Core Sandy Bridge processor. Sales tax is added where applicable. Features include an Intel Pentium Dual-Core B940 2GHz "Sandy Bridge" processor, 15.6" 1366x768 LED-backlit widescreen LCD, 4GB RAM, 500GB 5400 rpm hard drive, 802.11n wireless, Gigabit Ethernet, media card reader, webcam, 6-cell battery, and Windows 7 Home Premium 64-bit.

Update: This system is no longer available for shipping. However, you can choose free in-store pickup.