From my daughter: He should NOT have received the $5 back. If he's going to work to pay for the item, take him to the store, show him the price of it and make a deal with grandparents as to how that will be worked off IN ADDITION to doing his regular chores. Restitution needs to be made to BOTH his brother and his grandparents - the punishment only addresses restitution to his grandparents who bought the item. Restitution to his brother by ACTS, not just a verbal apology, still needs to be addressed.