US is a country run by marketers.
Even engine oil changes intervals here are dictated by lawyers.
You go to buy groceries and you won't find how much a pound of tomatoes cost anymore.
It is going to be "3 lb for $1" or "buy 1, get 1 for 50% off"
I am bargain hunter and often buy items that have 3 different prices on the same day, depends who you are.
But coming to FB - in the past local guides would say
"What happens in Las Vegas stays in Las Vegas"
Today they say
"what happens in Las Vegas is on FB an hour later".