Microsoft Store offers the 3.9-lb. Asus Transformer Book Flip Signature Edition Intel Haswell Core i5 1.7GHz 13.3" 1080p Convertible Touchscreen Laptop, model no. TP300LA-UB52T, for $599 with free shipping. That's tied with our mention from last week as the lowest total price we've seen, plus it's a current price low by $140. It converts into a touchscreen tablet and features an Intel Haswell Core i5-4210U 1.7GHz dual-core processor, 13.3" 1920x1080 (1080p) LED-backlit touchscreen LCD, 8GB RAM, 500GB hard drive, 802.11n wireless, webcam, Bluetooth, 3-cell battery, and Windows 8.1 64-bit.