How much is 1 sei?

Could you please clarify for me the value of "1 sei"? I'm interested in understanding its equivalent in terms of other cryptocurrencies or fiat currencies. Is there a standard conversion rate that applies, or does it fluctuate based on market conditions? Also, could you provide some context as to where this sei unit originates from and how it's commonly used in the cryptocurrency space? It would be helpful to have a brief overview of its significance and any relevant information that might assist me in understanding its value. Thank you for your assistance.