Dell Home, via its Member Purchase Program, offers its Dell 42.5" 4K IPS LED-Backlit LCD Ultra HD Multi-Client Monitor for $854.99 with free shipping. That's tied with our mention from a week ago as the lowest price we've seen for a single unit. (It's also the best deal now by $45. For further comparison, we saw two for $1,453 shipped last week.) This monitor can display up to four independent clients at once and features a 3840x2160 (4K, 2160p) native resolution, two 8-watt speakers, USB 3.0, DisplayPort, mini DisplayPort, and two HDMI inputs.
Note: Dell's MPP is available to select groups, including students, government employees, military (active and retired), credit union members, and health care workers.