Bismark Co. is in the process of considering a change in its terms of sale. The current policy is cash only; the new policy will involve one period's credit. Sales are 40,000 units per period at a price of $510 per unit. If credit is offered, the new price will be $537. Unit sales are not expected to change, and all customers are expected to take the credit. Bismark estimates that 3 percent of credit sales will be uncollectible. If the required return is 2.5 percent per period, is the change a good idea?