Acer EI272UR Monitor available at newegg for only $274.98 with the promo code EMCDKDH33
The specs are quite good for this price bracket. The only thing to note is that this is a VA panel, not an IPS.
That generally means worse color accuracy and viewing angles when comparing to an IPS panel. If you are on a budget and can’t dish out a bit extra for an IPS, this is not a bad way to go; it still retains 144hz refresh at 1440p and the 4ms response shouldn’t be a deal breaker unless you are an actual professional gamer.