Walmart offers the Asus 28" 4K Ultra HD LED-Backlit LCD Monitor, model no. PB287Q, for $386.99 with free shipping. (Amazon charges the same for Prime members only.) That's $44 under last month's mention and the lowest total price we've seen. (It's the best deal today by $24.) It features a 3840x2160 (2160p) native resolution, LED backlight, speakers, and DisplayPort and two HDMI inputs.
Walmart offers the InnoView 24" 1080p LED-Backlit LCD Monitor, model no. i24Lmh1, for $89.88 with free shipping. That's the lowest total price we could find by $13. It features a native resolution of 1920x1080 (1080p), and HDMI and VGA inputs.
Note: Amazon charges the same, but is noted as shipping in one to three weeks.