Leviticus 27:12

27:12 and the priest will establish its conversion value, whether good or bad. According to the assessed conversion value of the priest, thus it will be.

Leviticus 27:18

27:18 but if he consecrates his field after the jubilee, the priest will calculate the price for him according to the years that are left until the next jubilee year, and it will be deducted from the conversion value.