Acer via eBay has 34″ Acer Nitro 3440×1440 165Hz 0.5ms VA FreeSync Curved Gaming Monitor (Certified Refurbished, UM.CE3AA.V01) on sale for $181.99 (discount applies in cart). Shipping is free.

Specs:

• Resolution: 3440×1440 (UWQHD)
• Refresh Rate: 165Hz
• Response Time: 0.5ms (GTG)
• Panel Type: VA
• Curved Monitor/1000R
• AMD FreeSync Premium Technology
• Inputs:
  • 2x HDMI 2.0
  • 1x DisplayPort 1.4
• Includes a 2-year warranty serviced by Allstate.