McGilla Golf is evaluating a new line of golf clubs. The clubs will sell for $1,000 per set and have a variable cost of $450 per set. The company has spent $157,500 for a marketing study that determined the company will sell 50,500 sets per year for seven years. The marketing study also determined that the company will lose sales of 9,500 sets of its high-priced clubs. The high-priced clubs sell at $1,500 and have variable costs of $630. The company also will increase sales of its cheap clubs by 12,100 sets. The cheap clubs sell for $450 and have variable costs of $180 per set. The fixed costs each year will be $9,650,000. The company has also spent $1,175,000 on research and development for the new clubs. The plant and equipment required will cost $31,150,000 and will be depreciated on a straight-line basis to a zero salvage value. The new clubs also will require an increase in net working capital of $2,530,000 that will be returned at the end of the project. The tax rate is 22 percent and the cost of capital is 15 percent.

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