וְאִם־גָּאֹ֖ל יִגְאָלֶ֑נָּה וְיָסַ֥ף חֲמִישִׁת֖וֹ עַל־עֶרְכֶּֽךָ׃
Y si lo hubieren de redimir, añadirán su quinto sobre tu valuación.
Targum Jonathan on Leviticus
But if he would redeem it, let him add a fifth of its price upon that of its valuation.
Targum Jerusalem
And let him add a fifth of its price above its valuation.