amazon.com is selling this 27″ Dell S2721QS 4K UHD IPS Monitor for $249.99 with free shipping.

• Resolution: 3840×2160 (4K @ 60Hz)
• Response Time: 8ms (5ms Fast)
• Refresh Rate: 60Hz
• Contrast Ratio: 1300:1
• Viewing Angles: 178/178 degrees