Leviticus 27:12-16

And the priest shall assess it as either good or bad; as you, the priest, assess it, so shall it be.

But if he should ever want to redeem it, then he shall add a fifth of it to your assessment.

‘Now if someone consecrates his house as holy to the Lord, then the priest shall assess it as either good or bad; as the priest assesses it, so shall it stand.

Yet if the one who consecrates it should want to redeem his house, then he shall add a fifth of your assessment price to it, so that it may be his.

‘Again, if someone consecrates to the Lord part of the field of his own property, then your assessment shall be proportionate to the seed needed for it: a homer of barley seed at fifty shekels of silver.