McGilla Golf has decided to sell a new line of golf clubs. The clubs will sell for $850 per set and have a variable cost of $403 per set. The company has spent $166,951 for a marketing study that determined the company will sell 5,207 sets per year for seven years. The marketing study also determined that the company will lose sales of 925 sets of its high-priced clubs. The high-priced clubs sell at $1,177 and have variable costs of $677. The company will also increase sales of its cheap clubs by 1,027 sets. The cheap clubs sell for $442 and have variable costs of $248 per set. The fixed costs each year will be $939,109. The company has also spent $104,175 on research and development for the new clubs. The plant and equipment required will cost $2,894,309 and will be depreciated on a straight-line basis. The new clubs will also require an increase in net working capital of $131,561 that will be returned at the end of the project. The tax rate is 32 percent, and the cost of capital is 11 percent. What is the sensitivity of the NPV to changes in the price of the new clubs?