RefurbForLess via eBay offers the refurbished 3.19-lb. Asus Transformer Book T300 Chi Intel Broadwell Core M 800MHz 12.5" 1080p 2-In-1 Touchscreen Laptop in Black, model no. T300CHI-F1-DB, for $358.99 with free shipping. That's $38 under our mention of a new unit from last July and the lowest total price we've seen. (It's also a current low for a refurb by $91.) It features an Intel Core M-5Y10c 800MHz Broadwell dual-core processor, 12.5" 1920x1080 (1080p) touchscreen LCD, 4GB RAM, 128GB SSD, 802.11n wireless, webcam, Bluetooth, USB 3.0, microHDMI, and Windows 8.1 64-bit.
Of note, a 90-day warranty applies but it's unclear who backs it.