Dell Small Business still offers its Dell OptiPlex 9020 Intel Haswell Core i5 2GHz Micro Desktop PC for $629. Coupon code "BONUS100" cuts it to $529. With free shipping, that's $603 off list and tied with our mention from last week as the lowest total price we've seen. It features an Intel Core i5-4590T 2GHz Haswell quad-core processor, 8GB RAM, 128GB SSD, HDMI, USB 3.0, and Windows 7 Professional 64-bit. Deal ends September 28 at 8 am ET.