Newegg via eBay offers the 3.4-lb. ASUS Taichi31 Intel Ivy Bridge Core i5 1.8GHz Dual-Screen 1080p 13.3" Touchscreen Ultrabook, model no. TAICHI31-NS51T, for $529.99 with free shipping. That's $19 under our expired mention from four days ago and the best price we've seen. (It's a current low by $371.) The Taichi31 transforms into a tablet and features an Intel Core i5-3337U 1.8GHz Ivy Bridge dual-core processor, two 13.3" 1920x1080 (1080p) touchscreen LCDs, 4GB RAM, 128GB SSD, 802.11n wireless, Bluetooth 4.0, webcam, 4-cell battery, and Windows 8 64-bit.