Office Depot and OfficeMax again offers the Dell 28" 4K 2160p LED-Backlit LCD Ultra HD Monitor, model no. S2817QR, for $299.99 with free shipping. That's tied with our Black Friday mention as the lowest total price we've seen for any Dell 28" 4K monitor. (It's the best deal for this model by $99.) It features a 3840x2160 (4K, 2160p) native resolution, dual 9-watt speakers, USB 3.0, DisplayPort, and two HDMI inputs. Deal ends today.