JS:Ghost busting is a lucrative job. I don't know how much money Luigi makes as a plumber, but it can't be as much as he gets for vacuuming up ghosts. The spectres of Luigi's Mansion: Dark Moon are positively stuffed with coins, cash and gold bars. (And so is the furniture – the mansion's owners won't notice if you pilfer an ingot or two, right?) Granted, it's terrifying work, but it's got to be better than playing second fiddle to the world-renowned Mario every day of your life.