A retailer is looking to expand operations at all of their stores for an initial investment of $600. This investment will be depreciated on a straight line basis over the project's 8 year life. The expansion is expected to produce annual cash inflows of $550 in each year over the life of the project, while also producing annual cash outflows of $310 in each year over the life of the project. What is the project's NPV if the corporate tax rate is 34% and the project's required rate of return is 9%? $_____.