Dell Home, via its Member Purchase Program, offers its Dell 28" 2160p 4K LED-Backlit LCD Ultra HD Monitor, model no. S2817Q, for $503.49. Coupon code "EXTRA10" cuts it to $453.14. With free shipping, that's the lowest total price we could find by $31, although we saw it for $75 less (bundled with a $125 gift card) two weeks ago. This tilt-adjustable monitor features a 3840x2160 (4K) native resolution, 2ms response time, dual 9-watt integrated speakers, USB 3.0, DisplayPort, and two HDMI inputs. Deal ends May 2.

Note: Dell's MPP is available to select groups, including students, government employees, military (active and retired), credit union members, and health care workers