Why are Truffles so expensive? Are they worth it?

About

I'm Ethan, it's my philosophy that once you learn the how AND why behind cooking, you become a much better cook. Why is salt the most important seasoning for cooking? How is gluten actually developed in bread making? Why does a smash burger generate more flavor compounds through browning than a grilled burger? Once I learn, I want to share that information with you, so we can all become better cooks together.