Five Billionaires Who Live Below Their Means by Katie Adams Thursday, April 1, 2010 provided by At least once in your life - maybe even once a week or once a day for that matter - you have fantasized about coming into a lot of money. What would you do if you were worth millions or even billions? Believe it or not there are millionaires and billionaires among us who masquerade as relatively normal, run-of-the-mill people. Take a peek at some of the most frugal wealthy people in the world. Warren Buffett Associated Press Millions of people read Buffett's books and follow his firm, Berkshire Hathaway 's, every move. But the real secret to Buffett's personal fortune may be his penchant for frugality. Buffett, who is worth an estimated $47 billion, eschews opulent homes and luxury items . He and his wife still live in their modest home in Omaha, Nebraska which they purchased for just $31,500 more than 50 years ago. Although he's dined in the best restaurants around the glo