After all the guessing and bracket busting, we’re finally there: Kentucky, Wisconsin, Michigan State, and Duke are in the Final Four, and in a week, only one team will be left standing. The NCAA Tournament is arguably the biggest sporting event in the United States, with some estimates placing it above the Super Bowl for total revenue. Yet many of its financials remain shrouded in secrecy, under the principle that college sports are an amateur pastime and unconcerned with money. The fact is, schools, coaches, advertisers, and networks rake in millions and even billions every year from March Madness. Do you know how much is at stake? Take this quiz and find out.