McGilla Golf has decided to sell a new line of golf clubs. The company would like to know the sensitivity of NPV to changes in the price of the new clubs and the quantity of new clubs sold. The clubs will sell for $865 per set and have a variable cost of $425 per set. The company has spent $340,000 for a marketing study that determined the company will sell 70,600 sets per year for seven years. The marketing study also determined that the company will lose sales of 13,800 sets of its high-priced clubs. The high-priced clubs sell at $1,235 and have variable costs of $695. The company will also increase sales of its cheap clubs by 15,800 sets