Dell Small Business offers its Dell OptiPlex 3040 Intel Skylake Core i5 3.2GHz Small Form Factor Desktop PC for $649. Coupon code "100BIZDEAL" drops it to $549. With free shipping, that's the lowest total price we could find by $38. It features an Intel Core i5-6500 3.2GHz Skylake quad-core processor, 4GB RAM, 500GB 7200 rpm hard drive, DVD burner, and Windows 7 Professional 64-bit with a Windows 10 Pro license. Deal ends March 8.