Duck calls: A multi million dollar business

Who knew? A pretty amazing story of entrepreneurship and weird enough that they've based a show that's already on its fourth season on the family that founded the business (EOnline):

Duck calls, the product that made them millionaires, is still the Robertson family's true moneymaker. Last year, they sold 60,000 of their Duck Commander callers. This year, they are projected to sell over 750,000, and at an average price of $59.72 (they range from $19.95 to $179.95), they are set to make—wait for it—$44,790,000 on their duck calls in 2013!