How much are planets worth?

I'm curious to know, how much are planets actually worth? It's a fascinating concept, considering the vast resources and potential they hold. Is there a way to calculate their value, or is it all too subjective and dependent on factors like location, composition, and accessibility? Could the value of a planet fluctuate over time, just like the price of cryptocurrencies or stocks? And if so, what would drive those fluctuations? I'm eager to learn more about this intriguing topic.