No Prime membership required. Nope. You don't have to feather Bezos' nest to get yourself a frankly bonkers deal on a 1440p screen. You don't even need to get cosy with Newegg+, just give 'em $150 and they'll give you a prime gaming monitor in exchange.
This is the absolute cheapest 1440p gaming monitor I've seen, and it's not sporting some paltry 75 Hz refresh rate, either. You're getting a VA panel that's capable of hitting 170 Hz with a minimum 5 ms response time. That's where VA has the edge over IPS panels, quicker response times, that and better [[link]] contrast and black levels.
There are some obvious budget elements to the display, however, which are worth considering before you spend the money. First, the stand is a tilt-only stand, so no other adjustment allowed, and second, it's only capable of a max 250 nits peak brightness. That's pretty dim in a well-lit room, and that's possibly why I'd personally spend the extra $6.77 on the ASRock below.
The budget issues from the Acer immediately vanish as you're getting full height, tilt, and swivel adjustment and it's rated to a pretty bright 550 nits for peak luminance. That will deliver a really bright image and would make the Acer look very dim in comparison.
And hell, it is only another few bucks for something that will make a big difference in your everyday experience of the screen. But if the ASRock goes out of stock, just know there's another cheap 1440p option out there.