Refurbished. Sold by Woot, fulfilled by Amazon. 90-day warranty -- be sure to look into SquareTrade!
Good specs for the price: i7-6700HQ, Nvidia GTX 1070, 4K IPS panel, 16 GB RAM. You probably can get a comparable refurbished Alienware 17r4 from Dell Outlet, though, for less than $200 more before coupon, Dell chat, electronic rebate site, etc.