Maybe you've heard that country music superstar Carrie Underwood clips her own coupons, or that actors Kristen Bell and Dax Shepard only spent $142 on their wedding, or that some celebs and CEOs like Mark Zuckerberg still prefer to drive old, cheap cars.
Everyone loves a good deal, even the super-rich. But some, it seems, are willing to go above and beyond.
Here are some of the weirdest money-saving habits from six of the world's wealthiest people:
1. Warren Buffett
For the past 54 years, the CEO of Berkshire Hathaway has reportedly been enjoying the same breakfast every morning, and it never costs more than $3.17 .
The third-richest man in the world has a net worth of $74 billion, according to Forbes, and yet goes to McDonald's for the most important meal of the day, where he pays for two sausage patties, or a bacon, egg and cheese, with exact change.
2. Ingvar Kamprad
Ikea founder Ingvar Kamprad told the newspaper Sydsvenskan, "Normally, I try to get my haircut when I'm in a developing country. Last time it was in Vietnam," according to The Guardian.
That's not the Swedish billionaire's only frugal quirk. When he returned to Sweden after 40 years of tax exile in 2014, The Telegraph reported that he said on television, "If you look at me now, I don't think I'm wearing anything that wasn't bought at a flea market."
3. Michael Bloomberg
"You do something called resoling and re-heeling," he told the New York Post in 2010. "You don't have to throw them away and get new ones, you can just use the old ones."
4. Bill Gates
Microsoft co-founder Bill Gates apparently doesn't care much for the latest fashion, either. The world's richest person has a net worth of around $85 billion and wears a $10 watch, reports Politico.
He does splurge on occasion. He recently bought a Porsche 911 .
5. David Cheriton
After David Cheriton introduced Google founders Sergey Brin and Larry Page to venture capitalists at Kleiner Perkins Caufield & Byers, he was rewarded a chunk of Google stock from which he made billions.
But the Stanford computer science professor still leads a modest lifestyle. He flies commercial and wears jeans into work, according to Forbes. Cheriton even says he reuses tea bags.
6. Azim Premji
The chairman of Wipro Limited, one of the world's largest IT consulting firms, is worth $18.5 billion.
But the Indian tech king is still said to care about running a tight ship. He reportedly ensures his employees switch off the lights before leaving for the day and even keeps tabs on the number of toilet paper rolls they use.
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