Having worked in the bowels of a major online retailers networking team during black Friday sales, I can say that a lot of the patterns you see in this UI are real. People do indeed get out of bed at ungodly hours of the morning to get two bucks knocked off a stereo.
Of all the years where I worked in ecommerce, the first year with Black Friday was the only one that was any fun.
We where one the first webshop in the country to have a Black Friday campaign, mostly as an aftertought. The entire thing was just one guy in marketing, me, who hacked together a quick way to add the discounts and then our fantastic team of buyers who used to occasion to clean out old stock and mistaken purchases. We ran with anything from 20 - 90% discounts. As stuff sold out everyone just kept digging into old stock and adding insane discounts. It was so much fun to see items that normally didn't move just sell out in minutes.
The next year everything was more or less normalize, planned and just boring and stressful as expectations from customers where much higher and it became more a quest to keep the servers from crashing.
