Purple Haze Machine Shop is considering a four-year project to improve its production efficiency. Buying a new machine press for $513,115 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 $85,560. The OCFs of the project during the 4 years are $174,596, $194,278, $171,031 and $169,758, respectively. The press also requires an initial investment in spare parts inventory of $23,704, along with an additional $2,673 in inventory for each succeeding year of the project. The shop's discount rate is 7 percent. What is the NPV for this project?