WSJ: Only 2% of Realtors, a trademarked term used by the National Association of Realtors to which the majority of real-estate agents belong, earn more than $250,000 a year. The median annual income nationwide was $43,500 in 2012, up from $34,900 in 2011..."To really make serious money you have to know the business really well," says Norman Block, a broker and adjunct professor of real estate at the business school of University of North Carolina at Chapel Hill. "People think, I'm going to drive around in a big fancy car showing houses and it's going to be a lot of fun."