"Billionaire Bill Gates Guesses Grocery Store Prices" -- Ellen, 2018, 4:19 -- https://www.youtube.com/watch?v=ad_higXixRA
A fun video to accompany lectures about social class, income inequality, and stagnated social mobility. Does one of the wealthiest men in the world know the prices of everyday items? I would hypothesize, that like most rich people, he has absolutely no concept of "price".