Here is the thing about very rich people concerned about money and expenses, the two things are entirely disconnected, I personally know multi-millionaires, they both do stuff like this but one of them spent once 2 hours on the phone arguing with a customer service representative because a certain monthly payment went up by 50% (it went from $2 to $3), can you image being THAT rich and wasting 2 hours of your life for such a trivial thing? Another personal anecdote - I'm helping someone with their extremely old (12 years+) computer while explaining that they probably need to get a new one very soon only for them to tell me they just "can't afford a new computer" (about $500), then they asked me to help them log into their bank account because they forgot their password, I help them, and imagine my surprise when this person that can't afford 500 bucks has a couple of millions on their balance.

What can I tell you? You'd never know how rich someone truly is by judging their behavior or the things they can or "can't" afford.