Amazon offers the 5-lb. ASUS Intel Haswell Core i5 Dual 1.7GHz 15.6" 1080p Flip Convertible Laptop, model no. TP500LA-AB53T, for $629.99 with free shipping. That's $20 below our July mention and the lowest total price we've seen. (It's a current low by $10.) It features an Intel Core Haswell i5-4210U 1.7GHz dual-core processor, 15.6" 1920x1080 touchscreen LCD with 360-degree flip mode, 8GB RAM, 1TB hard drive, USB 3.0, 802.11n wireless, and Windows 8.1.