Purchase 27"+ 4k Monitor

I would like to purchase a 4k (at least 3840x2160) monitor that is at least 27" diagonally. I found a few new monitors which I can purchase for about $300 online so I am hoping to find something more cost effective here.

Please send an e-mail to dczheng@indiana.edu with information about the brand, model number, and your best price.

Thank you.