McGilla Golf has decided to sell a new line of golf clubs. 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. The cheap clubs sell for $455 and have variable costs of $245 per set. The fixed costs each year will be $10,750,000. The company has also spent $2,900,000 on research and development for the new clubs. The plant and equipment required will cost $39,200,000 and will be depreciated on a straight-line basis. The new clubs will also require an increase in net working capital of $3,600,000 that will be returned at the end of the project. The tax rate is 24 percent, and the cost of capital is 12 percent.

Suppose you feel that the values are accurate to within only 10 percent. What are the best-case and worst-case NPVs?