Many years ago, I used to work in infosec. One of my employer's clients was a big and famous brand well-established in the luxury sector. One day, a colleague of mine was sent to test their POS. Inside one, he found a single transaction for around 6M € from a credit card swipe. It wasn't a payment made from a bank transfer or a check, just a single credit card swipe! At the time, I couldn't even dream a card with such a credit allowance would exist. I had a pretty good living then, with money for the rent, daily expenses, and even some savings. Still, for an instant, I remember feeling like a poor child living in a house made of mud.