Dell Small Business offers its Dell OptiPlex 3020 Intel Haswell Core i5 3.3GHz Small Form Factor Desktop PC (no monitor) for $629. Coupon code "100BIZDEAL" cuts it to $529. With free shipping, that's $24 below our November mention and the lowest total price we could find by $20. It features an Intel Core i5-4590 3.3GHz Haswell quad-core processor, 4GB RAM, 500GB 7200 rpm hard drive, DVD burner, and Windows 10 Professional 64-bit. Deal ends February 18.