Think of Nevada!  

"Brothels pay taxes to their respective counties. Lyon County receives approximately $400,000 to $500,000 per year from these taxes."

"About 66 times more money is spent by customers on illegal prostitution in Nevada than in the regulated brothels."

"Legal prostitution in Nevada grosses about $75 million per year while illegal prostitution in the Las Vegas area grosses about $5 billion per year.  Some 300–400 prostitutes are arrested each month by the Las Vegas police."