Go Logistics, a small logistics company, is planning to invest in a fleet of delivery vehicles for $640,000; each vehicle is considered MACRS 5-year property. Go Logistics estimates that their fleet of delivery vehicles will generate an additional revenue of $135,000 per year; they plan to operate their fleet for 4 years. After 4 years, the delivery fleet would have a salvage value of $90,000. The tax rate is 22%, the delivery vehicles are eligible for a Section 179 deduction, and Go Logistics uses an after-tax MARR of 9%. Compute the PW and determine whether the business should invest in the delivery vehicles.