Rochelle was trying to decide whether to buy or lease a binding machine for her publishing firm, Chelle-Book. She had done most of the analytical work, but a client interrupted her with an urgent call. Now it was time to finish her analysis. She had determined that purchasing the binding machine, which cost $40,500, would have an economic cost to her of $28,479 including salvage value. That is, the NPV was $28,479. On her desk, Rochelle also had a lease proposal from Swift Leasing. Their sales pitch was that they would provide the binding machine to Rochelle under their "No Worries" lease program for "only $9,891 per year, all maintenance included." Their schedule of five annual payments looked like the following