ישעיהו נב:ג פירוש: רש״י ואבן עזרא

You were sold for nought Because of worthless matters, i.e., the evil inclination, which affords you no reward.

You have been sold, etc. I have sold you to the nations without receiving money for you, and so will I redeem you without giving money for you.

and you shall not be redeemed for money but with repentance.