newegg offers the Lenovo IdeaPad Z575 AMD A6 1.5GHz 15.6" LED-Backlit Notebook, model no. 12992DU, for $379.99. This $100 mail-in rebate cuts it to $279.99. With free shipping, that's $100 under our mention from two days ago and the best price we've seen for any quad core-equipped 16" laptop, new or refurbished, by $10. (It's a current price low by $170). It features an AMD A6-3420M 1.5GHz quad-core processor, 15.6" 1366x768 LED-backlit LCD, 4GB RAM, 500GB hard drive, DVD burner, 802.11n wireless, webcam, memory card reader, and Windows 7 Home Premium 64-bit. Rebate expires September 3.