eBay with Acer has the certified refurbished Acer 34" 3440x1440 165Hz Gaming Monitor (UM.CE3AA.V01) on sale for $250 - 9% off automatically in cart = $227 with free shipping. Includes 2-year Allstate warranty. 

• 34" VA Panel (3440 x 1440), 165Hz Refresh Rate, 0.5 ms (GtG) response time
• 300-nits brightness, 2x DisplayPort and 2x HDMI inputs