Dell Small Business offers its Dell OptiPlex 3040 Intel Skylake Pentium 3.3GHz Small Form Factor Desktop PC for $529. Coupon code "DELL$100" cuts it to $429. With free shipping, that's $12 under our March mention, $327 off list, and the lowest total price we could find. It features an Intel Pentium G4400 3.3GHz Skylake dual-core processor, 4GB RAM, 500GB 7200 rpm hard drive, and Windows 7 Professional 64-bit with a Windows 10 Pro License. (No optical drive is included.) Deal ends June 16.