https://www.amazon.com/Alienware-25-Gaming-Monitor-Height-Adjustable/dp/B0733YCKM5/ref=sr_1_2?keywords=alienware+240hz&qid=1570803805&s=electronics&sr=1-2
you can get a 240hz monitor for that price, assuming your hardware can support it. You can occasionally find a sale for a 1440p 165hz monitor TN panel for around that price as well.
but if you had to choose between those two, I’d go with the 165hz monitor over the ultra wide. Ultra wide is great if you need it for things like video editing, gaming and even movie watching comes out a tad stretched out if you intend to do full screen.