Best Buy via eBay offers the AOC 28" 4K Ultra HD LED LCD FreeSync Monitor
, model no. U2879VF, for $279.99
with free shipping
. That's $20 under our mention from last month and the lowest total price we've seen. (It's a current low by $67.) It features a 3840x2160 (4K) native resolution (four times that of 1080p monitors), AMD FreeSync technology, and DisplayPort, DVI-D, and VGA inputs.