Leviticus 27:14

And the priest shall value it, whether it be good or bad: as thou valuest it, [who art] the priest, so shall it be.

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

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.