Refurb4Less via eBay offers the refurbished 8.4-lb. Asus ROG Intel Haswell Core i7 2.6GHz Quad 17.3" 1080p Gaming Laptop, model no. G751JT-WH71(WX), for $789.99 with free shipping. That's $310 under our mention of a new unit from a year ago and $250 under the lowest total price we could find for a used system elsewhere. Features include an Intel Haswell Core i7-4720HQ 2.6GHz quad-core processor, 17.3" 1920x1080 (1080p) LCD, 16GB RAM, 1TB 7200 rpm hard drive, Nvidia GeForce GTX 970M 3GB graphics card, 802.11ac wireless, DVD burner, Bluetooth 4.0, USB 3.0, Thunderbolt, 8-cell battery, and Windows 10 Home 64-bit.
A 90-day warranty applies, but it's unclear who backs it.