Why is an Economist so expensive?

I've often wondered, why is an economist's services so costly? Is it because they possess a unique set of skills and knowledge that are in high demand? Or is it due to the complexity of the economic landscape and the intricate analysis they need to conduct? Perhaps it's a combination of both. But what exactly sets an economist apart from other professionals, and why do their services come with such a hefty price tag? I'd love to hear your thoughts on this.