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 ...

We explored why natural latex mattresses are so expensive. More from Retail One of the most expensive mattresses on the market is made from natural latex. It's hypoallergenic, biodegradable ...

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.

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 ...

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 ...

More from So Expensive Student-grade colored pencils and professional-grade ones vary drastically not only in their price but how they're made. A set of 120 Faber-Castell Polychromos pencils costs ...

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.

More from So Expensive Canada Goose parkas have become synonymous with wealth, celebrity, and Hollywood, but the brand wasn't always the luxury label it is today. What started out as a little ...

Now, oxtail's longtime fans are fighting to #MakeOxtailCheapAgain. More from So Expensive In the US, oxtail was once considered a cheap and undesirable cut of beef. That's because it's mostly bone ...