4.7 Balance of the cash value.—The balance of the cash value of the supply under section 20(8) of the Act is the amount remaining after deducting from the cash value so much of the sum of the payments made by the debtor under the credit agreement as, on the basis of an apportionment in accordance with the rights and obligations of the parties to such agreement, may properly be regarded as having been made in respect of the cash value of the supply. For example, assume that the seller of goods is a dealer who finances the purchase, the consideration for the sale was $5,000, and the payments by the buyer properly attributable to the principal were $1,500. For purposes of section 20(7) of the Act, the value of the goods repossessed is $5,000 less $1,500, or $3,500.