Dell Small Business offers the Dell OptiPlex 3020 Micro Intel Haswell Core i5 2GHz Desktop PC (no monitor) for $539. Coupon code “4V?SLLH0M$CB0K” cuts it to $489. With free shipping, that's $424 off list and the lowest total price we could find. It features an Intel Core i5-4590T 2GHz Haswell quad-core processor, 4GB RAM, 500GB 7200 rpm hard drive, DVD burner, 802.11ac wireless, and Windows 7 Professional 64-bit (plus a Windows 8 Pro license). Deal ends November 26.