How much is a Liberty $20 Gold Coin worth?

Can you provide some insight into the current market value of a Liberty $20 Gold Coin? Are there any factors that could affect its worth, such as its condition, rarity, or historical significance? Is there a standard way to determine the worth of such a coin, or does it vary depending on the individual seller and buyer? Additionally, are there any resources you would recommend for someone looking to learn more about the value of rare coins like this?