Why are wigs so expensive?

I've always wondered, why exactly are wigs so expensive? Is it because of the intricate crafting process, the high-quality materials used, or the demand for them in the market? Could it be a combination of all three? And how does the pricing differ for synthetic wigs versus those made from human hair? It seems like there's a lot to consider when trying to understand the cost of these hairpieces. Could you help me gain a better understanding of why wigs can be so pricey?