Need the opportunity cost, thanks!

Waterways Continuing Problem 21 (Part 2) Waterways has discovered that a small fitting it now manufactures at a cost of $1.00 per unit could be bought elsewhere for $0.82 per unit. Waterways has fixed costs of $0.20 per unit that cannot be eliminated by buying this unit. Waterways needs 460,000 of these units each year. If Waterways decides to buy rather than produce the small fitting, it can devote the machinery and labor to making a timing unit it now buys from another company. Waterways uses approximately 500 of these units each year. The cost of the unit is $12.66. To aid in the production of this unit, Waterways would need to purchase a new machine at a cost of $2,345, and the cost of producing the units would be $9.90 a unit. Your answer is correct. Without considering the possibility of making the timing unit, evaluate whether Waterways should buy or continue to make the small fitting. The company should Imake the fitting. Incremental cost / (savings) will be $9.20 Your answer is incorrect. Try again. What is Waterways' opportunity cost if it chooses to buy the small fitting and start manufacturing the timing unit? The opportunity cost is 1965) Your answer is correct. Would it be wise for Waterways to buy the fitting and manufacture the timing unit? The company should make small fittings and lbuy the timing units