With an inheritance from his father, Nigel set up a business at his home to produce and sell honey. Nigel gave up a well-paid job to start his business. At first, he did not think that his sales were high enough to make a profit, but since then he believes that his business has become profitable. Nigel has gathered together his costs and revenues and is about to calculate his business's profits for the past year. Nigel thinks that if his business has made a loss over the year the answer is easy: increase the price of a jar of his honey. If he does this, he thinks his business would be certain to make a profit.