Purple Haze Machine Shop is considering a four-year project to improve its production efficiency. Buying a new machine press for $505,850 is estimated to result in some amount of annual pretax cost savings. The press will have an aftertax salvage value at the end of the project of $86,981. The OCFs of the project during the 4 years are $171,536, $198,375, $177,821 and $162,993, respectively. The press also requires an initial investment in spare parts inventory of $24,869, along with an additional $2,420 in inventory for each succeeding year of the project. The shop's discount rate is 9 percent. What is the NPV for this project?