Staples offers the 4.9-lb. Lenovo IdeaPad U510 Intel Ivy Bridge Core i5 1.7GHz 15.6" Ultrabook
in Gray, model no. 59355296, for $499.99
with free shipping
. That's $300 off list and among the least expensive U510 Ultrabooks we've seen with a Core i5 CPU. (For further comparison, we saw it for $25 less in February.) Features include an Intel Core i5-3317U 1.7GHz Ivy Bridge dual-core processor, 15.6" 1366x768 LCD, 6GB RAM, 750GB hard drive with 24GB SSD, DVD burner, 802.11n wireless, Bluetooth 4.0, webcam, USB 3.0, and Windows 8.