The show that explains the real reason why the world’s priciest products and materials are so expensive. More from So Expensive Browse all videos Play Play Play Play Play Play Play Play ...

So, why has huitlacoche become so popular, and what exactly makes it so expensive? More from So Expensive Huitlacoche, also known as the "Mexican truffle," is an edible fungus that forms on ...

One reason vanilla has gotten so expensive is, it's hard to grow ... Growing vanilla is a stressful and volatile business because there is such high demand, vanilla beans are a target for theft.