Adorama via eBay offers the Lenovo Erazer X315 AMD FX 3.5GHz Gaming Desktop PC
, model no. 90B00001US, for $499.99
with free shipping
. That's the lowest total price we could find by $80. It features an AMD FX-770K 3.5GHz quad-core processor, 12GB RAM, 1TB 7200 rpm hard drive with 128GB SSD, AMD R9 260 2GB graphics, DVD burner, 802.11ac wireless, Gigabit Ethernet, Bluetooth 4.0, HDMI, and Windows 8.1 64-bit.