APEX Super Golf has decided to sell a new line of golf clubs. The clubs will sell for $801 per set and have a variable cost of $412 per set. The company has spent $155,009 for a marketing study that determined the company will sell 5,428 sets per year for seven years. The marketing study also determined that the company will lose sales of 922 sets of its high-priced clubs. The high-priced clubs sell at $1,012 and have variable costs of $731. The company will also increase sales of its cheap clubs by 1,178 sets. The cheap clubs sell for $443 and have variable costs of $259 per set. The fixed costs each year will be $873,546. The company has also spent $116,434 on research and development for the new clubs. The plant and equipment required will cost $2,867,181 and will be depreciated on a straight-line basis. The new clubs will also require an increase in net working capital of $132,006 that will be returned at the end of the project. The tax rate is 33 percent, and the cost of capital is 13 percent. What is the sensitivity of the NPV to changes in the price of the new clubs? (don't round calculations)