Brown Box via eBay offers the refurbished Gateway Intel Core i3 Dual Core 3.3GHz Desktop PC (no monitor), model no. DX4860, for $355.99 with free shipping. That's $22 less than the lowest total price we could find for a similar system elsewhere. Sales tax is added where applicable. Features include an Intel Core i3-2120 3.3.GHz Sandy Bridge dual-core processor, 6GB RAM, 1TB hard drive, dual-layer DVD burner, 802.11n wireless, Gigabit Ethernet, USB 3.0, and Windows 7 Home Premium 64-bit.

A 90-day warranty applies, however, it's unclear who supports it.