If there are many years, the price will be high. But if there are only a few years, lower the price, because your neighbor is really selling only a few crops to you.
If you want to buy your neighbor’s land, count the number of years since the last Jubilee, and use that number to decide the right price. If your neighbor sells the land to you, count the number of years left for harvesting crops, and use that number to decide the right price.
the years must be counted since the land was sold. That number must be used to decide how much the first owner should pay back the one who bought it. Then the land will belong to the first owner again.
But if the person gives the field after the Jubilee, the priest must decide the exact price by counting the number of years to the next year of Jubilee. Then he will subtract that number from its value.