Newegg offers the Acer 28" B286HK ymjdpprz 4K 2160p LED-Backlit LCD Ultra HD Monitor, model no. UM.PB6AA.003, for $369.99. This $20 mail-in rebate cuts it to $349.99. With free shipping, that's the lowest total price we could find by $69, although we saw it for $15 less three weeks ago. It features a 3840x2160 native resolution, LED backlight, DVI, DisplayPort, USB 3.0, and HDMI. Deal ends September 28.