Leviticus 27:13-17

But if he will at all redeem it, then he shall add a fifth part thereof unto thy estimation.

And when a man shall sanctify his house to be holy unto the LORD, then the priest shall estimate it, whether it be good or bad: as the priest shall estimate it, so shall it stand.

And if he that sanctified it will redeem his house, then he shall add the fifth part of the money of thy estimation unto it, and it shall be his.

And if a man shall sanctify unto the LORD some part of a field of his possession, then thy estimation shall be according to the seed thereof: an homer of barley seed shall be valued at fifty shekels of silver.

If he sanctify his field from the year of jubile, according to thy estimation it shall stand.