Amazon has the Acer Nitro XV2 Series XV272U Pbmiiprzx AMD FreeSync 144Hz WQHD 27" Zero Frame IPS Gaming Monitor (Black) for $300 with free shipping. Best Buy has it for the same price.

2560 x 1440 (WQHD), 144Hz refresh rate, 1ms (VRB) response time

2 x 2W speakers, VESA DisplayHDR 400, DisplayPort, 2 x HDMI 2.0

Costco has the Acer Nitro VG280K FreeSync 60Hz 4K UHD 28" IPS Gaming Monitor for $270 + $15 non-member surcharge = $285 shipped