To Buy or Not to Buy Table 1: Calculation table for Net Present Value 1) With 6 percent discount rate, the press should be bought as the NPV is $139,267.65 which indicates that the project will provide higher return in the long run. 2) If the discount rate is 10 percent, the NPV for the project is - $347,978.03 meaning buying the press the company would incur a loss and therefore should not buy the press (Cornwall, Vang & Hartman,