https://www.newegg.com/Product/Product.aspx?Item=N82E16824236174&utm_medium=Email&utm_source=IGNEFL020917&cm_mmc=EMC-IGNEFL020917-_-EMC-020917-Index-_-LCDLEDMonitors-_-24236174-S0I&ignorebbr=1
90$ after rebate, 60hz 23.6in. If you just want something that works, then get that. It wont win any prizes, but at your price point your not getting any fancy toys anyhow, so might as well save 50 bucks. https://www.newegg.com/Product/Product.aspx?Item=N82E16824022402
Curved for 129$; Personally I wouldn't suggest a curved monitor just because its gimmicky as hell, but hey do what you want. https://www.newegg.com/Product/Product.aspx?Item=24-160-275
75hz 21.5 inches 125$. The slightly higher refresh rate may be appealing to you, but based on your replies I doubt you care about that. https://www.newegg.com/Product/Product.aspx?Item=N82E16824160221
22in for 75$, grab two and join the dual monitor master race. Not the best monitor in the world, but again as stated above, your not getting amazing for 150$ anyhow.
Edit: http://www.ebay.com/itm/USED-Perfect-Pixel-QNIX-QHD2410R-MULTI-24-2560x1440-WQHD-PLS-DVI-HDMI-Monitor-/122277992849?hash=item1c78561991:g:Y4UAAOSw-0xYWYC7
1440p 27 inches. Used. Figured I would link this as well. Its above your budget at 170$, but it is a really good monitor for the price. Last one in stock at this price point: Be warned, Qnix monitors come with basically no warranty, your fucked is something goes wrong, but they are as good as price to performance gets in the monitor world. http://www.ebay.com/itm/QNIX-QHD2410R-Multi-24-inch-2560x1440-LED-24-DVI-HDMI-VGA-Samsung-PLS-Monitor-/131700484079?hash=item1ea9f5e7ef:g:akAAAOSwYIhWlgdg
same monitor but new, 180$ instead.