UPDATE: The $399 price is gone now but you can still get a deal for it at $419 using the links below for a limited time!
Adorama has the great GoPro Hero 4 Black camera at a discount for only today at $399 compared to $499 regular with free expedited shipping. Seems more things than the Stock Market are on Sale today! This camera is capable of 240fps and 120fps at 720p and 4k at 30p among other formats. If you have waited for a while for the GoPro Hero 4 Black to be lower in price this is your chance.