Leviticus 27:4-8

Or if the person is a female, then your assessment shall be thirty shekels.

And if the person is from five years even to twenty years old, then your assessment for a male shall be twenty shekels, and for a female, ten shekels.

But if the person is from a month even up to five years old, then your assessment shall be five shekels of silver for a male, and for a female your assessment shall be three shekels of silver.

If the person is from sixty years old and upward, if a male, then your assessment shall be fifteen shekels, and for a female, ten shekels.

But if he is poorer than your assessment, then he shall be presented before the priest, and the priest shall assess him; according to the means of the one who vowed, the priest shall assess him.