Geoduck clams, known for their phallic shape, cost up to $30 a pound. But the industry depends on buyers in China, where the economy is slowing.

How did Lego go from a children's toy to a collector's item? And why is it so expensive? More from So Expensive Lego is the world's largest toy company, but it's gained a reputation for being an ...

So, why is climbing Mount Everest so expensive? And given the risks involved, should it cost more than it does? More from So Expensive For many, climbing Mount Everest is the adventure of a lifetime.

Here's why luxury candles are so expensive. More from So Expensive Founded in 1643 in France, Trudon is one of the oldest candle manufacturers in the world. Its candles lined Marie Antoinette's ...

The wood is so precious — and so expensive — that the French government heavily regulates its sales through annual auctions of oak forest plots. More from So Expensive Luxury winemakers ...

We went to Morocco to find out why these artisans struggle to earn a profit while the rugs are so expensive. More from So Expensive Moroccan rugs are valued around the world for their complex ...

So, what makes a successful Seeing Eye dog? And why are they so expensive? This video is audio-described. More from So Expensive Guide dogs from The Seeing Eye are specially bred, trained ...

So what makes oboes so difficult to make? And is that why they're so expensive? More from Retail A specialized woodwind with a wistful yet powerful tone, the oboe is one of the most expensive ...

This makes pearl lobsters more than 6 times more expensive than Maine lobsters, which go for $15 a kilogram. So what makes pearl lobsters so special, and why are they so expensive? More from So ...