A four year project has an initial investment in plant and equipment of $1.65 million, which will be depreciated on a straight line basis over the four year life of the project. The company will sell 75,000 units at a price of $81 each and a variable cost of $39. Fixed costs are $2.2 million, the tax rate is 21% and the cost of capital is 15%. How sensitive is NPV to changes in price per unit? What does this number mean?

Equipment	$ 1,650,000
Project life (years)	5
Sales (units)	75,000
Price/unit	$ 81
Variable cost/unit	$ 39
Fixed costs	$ 2,200,000
Tax rate	21%
Required return	15%