Walmart offers the refurbished Sony Vaio Duo Intel Ivy Bridge Dual Core i7 2GHz 11.6" Laptop for $499 with free shipping. That's $404 off and the best price we could find. It features an Intel Core i7-3537U 2GHz Ivy Bridge dual-core processor, 11.6" LCD display (though resolution is unspecified), 8GB RAM, 256GB hard drive, 802.11n wireless, Bluetooth 4.0, USB 3.0, and Windows 10 Pro 64-bit.

Note: A 90-day warranty applies but it's unclear who covers it.