Charles Ellicott Commentary Leviticus 27:19

"And if he that sanctified the field will indeed redeem it, then he shall add the fifth part of the money of thy estimation unto it, and it shall be assured to him." — Leviticus 27:19 (ASV)

And if he that sanctified the field will in any wise redeem it. —Better, and if he wishes to redeem the field that sanctified it. . This is sure to be the case, since the low value fixed per acre was designed so that the field would be redeemed by him. According to the legislation during the Second Temple, the rule here included his wife and his heirs, any one of whom had the right to redeem it. But the family, in redeeming it, had, as usual, to add one-fifth over and above the valuation price, for the reason already stated (Leviticus 27:15).