You can now get the 27" Dell D2719HGF gaming monitor for just $159 on Newegg's eBay store. That's a $110 discount over MSRP, and it comes with free shipping.
The 27" TN panel has a 2ms response time and runs at a 1920X1080 resolution. But it's the FreeSync support and 144Hz refresh rate that makes it special. (To be more specific, the monitor supports FreeSync from 40 to 144 Hz.) The TN panel is WLED backlit, and the monitor sports DisplayPort 1.2 and HDMI 2.0 connections, along with two USB 2.0 ports and one USB 3.0. It also comes with in-built speakers and a headphone jack, though according to a few reviews we've seen at retailers, you might consider using a separate set of speakers.
Newegg on eBay lists this as a "limited supply" item, so you might move quickly if this monitor is a good fit for your needs.