As one of its daily deals, Adorama via eBay offers the 5.7-lb. ASUS VivoBook Intel Ivy Bridge Core i5 1.7GHz 15.6" Touchscreen Ultrabook
in Black, model no. S550CA-DS51T, for $529.99
with free shipping
. That's $20 under our mention from two weeks ago and the lowest total price we've seen. (It's also a current price low by $110.) It features an Intel Core i5-3317U 1.7GHz Ivy Bridge dual-core processor, 15.6" 1366x768 LED-backlit multi-touch LCD, 6GB RAM, 500GB hard drive with 24GB SSD, DVD burner, 802.11n wireless, Bluetooth, webcam, 4-cell battery, and Windows 8. Deal ends today.