Good IPS monitor less than $300?

[Planet_Icarus]

Hey, I'm looking for either a 1440p or 21:9 aspect ratio or, I doubt it, a 4K monitor for around $300?

 

[Kohwali]

ASUS PB278Q is a 27" 1440p monitor $450: http://www.amazon.com/PB278Q-27-Inch-LED-lit-Professional-Graphics/dp/B009C3M7H0

ASUS VS239H-P is a 23.5" 1080p monitor for $150: http://www.amazon.com/ASUS-VS239H-P-23-Inch-Full-HD-Monitor/dp/B008DWITHI