If credit under a credit card plan is offered and extended in connection with a demand deposit account or other transaction account maintained by the borrower pursuant to an agreement or arrangement whereby the holder of the deposit account agrees to honor checks, drafts or other debits to the account, which if paid would create or increase a negative balance in the account, by making extensions of credit to the borrower under the credit card plan, any charges customarily imposed under the terms governing the demand deposit or other transaction account in the absence of any associated credit card plan (including, without limitation, check charges, monthly maintenance charges, checkbook charges, charges for checks drawn on funds in excess of an available line of credit and other similar charges) may continue to be imposed on the account without specific reference to it or incorporation of it by reference in the agreement governing the credit card plan and the amount of the charge, to the extent the balance in the demand deposit or other transaction account is insufficient to pay such a charge, may be charged to the borrower’s account under the plan as a loan under it and may be included in outstanding unpaid indebtedness in accordance with the terms of the agreement governing the credit card plan.