Newegg offers the Acer Predator 27" G-Sync IPS WQHD LED-Backlit LCD Monitor, model no. XB270HU, for $599 with free shipping. That's a buck under last month's mention of a refurb and the lowest total price we could find by $157. This gaming monitor features a native resolution of 2560x1440, Nvidia G-Sync technology, 144Hz refresh rate, 1,000:1 contrast ratio, and DisplayPort. Deal ends September 18.