Staples offers the Dell S2817Q 27.9" 4K LED-Backlit LCD Ultra HD Monitor for $259.99 with free shipping. That's the lowest price we could find by $70, although it was $10 less in January. It features a 3840x2160 (4K, 2160p) native resolution, dual 9-watt speakers, USB 3.0, DisplayPort, Mini DisplayPort, and two HDMI inputs.