Newegg offers the refurbished Acer Aspire Intel Celeron Quad-Core 2GHz Desktop PC, model no. AXC-603G-UW30, for $199.99. A $40 mail-in rebate cuts the price to $159.99. With free shipping, that's $20 below our May mention and the lowest total price we've seen. (It's a current low of $40 for a refurb.) Features include an Intel Bay Trail Celeron J1900 2GHz quad-core processor, 4GB RAM, 500GB 7200 rpm hard drive, DVD burner, Gigabit Ethernet, and Windows 8.1 64-bit. Rebate expires August 31.

A 90-day warranty applies, but it's unclear who backs it.