Kevin O’Leary is worth $400 million, yet he still shops at Walmart for $29 jeans; here’s what the Shark Tank star has in common with $144 billion Warren Buffett

Kevin O’Leary, with an estimated $400 million net worth, still shops at Walmart for everyday essentials and proudly buys $29 jeans. The Shark Tank investor’s bargain-hunting habits have something in common with Warren Buffett, worth an estimated $144 billion. Here’s why both billionaires and millionaires continue to embrace frugality despite their enormous fortunes.