A new customer has placed an order for a turbine engine that has a variable cost of $1.13 million per unit and a credit sales price of $1.64 million. Credit is extended for one period. Based on historical experience, payment for about 1 out of every 178 such orders is never collected. The required return is 2.1 percent per period. What is the NPV per unit if this is a one-time order? $516,407 $457,244 $477.244 $467.244 $447,244