Overstock offers the Acer XG270HU 27" 2560x1440 144Hz LED-Backlit LCD Monitor, model no. UM.HG0AA.001, for $445.98 with free shipping. That's $4 below our mention from a month ago and the lowest total price we've seen. (It's a current low by $4, although most charge around $466 or much more.) It features a native resolution of 2560x1440, 144Hz refresh rate, LED backlight,built-in speakers, AMD Free-Sync technology, two DVI inputs, one HDMI port, and one DisplayPort.
Note: Overstock is not using the correct image for the item.