A holder may at any time or from time to time permit a buyer to defer installment payments due under the terms of a retail installment contract and may, in connection with such deferral, charge and collect deferral charges and may also require payment by such buyer of the additional cost to the holder of premiums for continuing in force, until the end of such period of deferral, any insurance coverage provided in connection with the contract.
5 Del. C. § 2910