(b) If the amount due under a contribution agreement remains unpaid for a period of 20 days after written notice of demand for payment has been given to the delinquent would-be contributor, the membership interests that were subject to the contribution agreement may be offered for sale by the cooperative for a price in money equaling or exceeding the sum of the full balance owed by the delinquent would-be contributor plus the expenses incidental to the sale. If the membership interests that were subject to the contribution agreement are sold according to this paragraph, the cooperative shall pay to the delinquent would-be contributor or to the delinquent would-be contributor's legal representative the lesser of:
(1) the excess of net proceeds realized by the cooperative over the sum of the amount owed by the delinquent would-be contributor plus the expenses incidental to the sale, less any penalty stated in the contribution agreement, which may include forfeiture of the partial contribution; and(2) the amount actually paid by the delinquent would-be contributor. If the membership interests that were subject to the contribution agreement are not sold according to this paragraph, the cooperative may collect the amount due in the same manner as a debt due the cooperative or cancel the contribution agreement according to paragraph (c).