As one of its daily deals, TigerDirect offers the 5.4-lb. Lenovo ThinkPad Edge E531 Intel Ivy Bridge Core i7 2.2GHz 15.6" LED-Backlit Laptop in Black, model no. 688528U, for $599.99. Checkout via by Visa and it drops to $569.99. With free shipping, that's $149 under last month's mention of a similarly configured E531 and the best price we've seen for a ThinkPad Edge E531 equipped with a Core i7 CPU. (It's also a current price low by $96.) Features include an Intel Core i7-3632QM 2.2GHz Ivy Bridge quad-core processor, 15.6" 1366x768 LCD, 4GB RAM, 500GB hard drive, DVD burner, 802.11n wireless, Bluetooth 4.0, media card reader, USB 3.0, HDMI port, 6-cell battery, and Windows 7 Home Professional 64-bit (with an included option Windows 8 Professional 64-Bit upgrade). Deal ends November 30 at 3 am ET.