CowBoom offers the used Dell XPS Intel Haswell Core i5 18.4" 1080p Touchscreen Portable All-in-One Desktop PC, model no. XPSO18T-4444BLK, for $549.99. Coupon code "XPS10815" cuts the price to $349.99. With free shipping, that's $420 under the lowest total price we could find for a new unit, although we saw a used unit for $20 less two weeks ago. It features an Intel Haswell Core i5-4210U 1.7GHz dual-core processor, 18.4" 1920x1080 touchscreen LCD, 8GB RAM, 1TB hard drive, webcam, 802.11ac wireless, Bluetooth, and Windows 8.
Note: This item may have scratches, scuffs, dents, chips, or dings and may have replacement or missing accessories. No warranty information is provided.