If he sanctify his field from the year of jubilee
The very year, as Aben Ezra, while it is current, or when it is past, and he immediately sanctifies it for an holy use, and one comes to redeem it, as Jarchi says, as soon as ever it is devoted, and a priest has valued it, and there is a purchaser of it:
according to thy estimation it shall stand;
what price soever the priest set upon it, that it was to go at, and he that had a mind to purchase it might have it for it, unless it was he that devoted it, and then he was to give a fifth part more, as afterwards expressed.