Dell Small Business offers its Dell OptiPlex 3040 Intel Skylake Core i5 2.5GHz Mini Tower Desktop PC for $569. Coupon code "SAVE35" cuts that to $528.36. With free shipping, that's the lowest total price we could find by $14. It features an Intel Core i5-6500 2.5GHz Skylake quad-core processor, 4GB RAM, 128GB SSD, DVD burner, HDMI, USB 3.0, DisplayPort, and Windows 7 Professional 64-bit with a Windows 10 Pro license. Deal ends January 2.