Example: you want to compare two different printers. The first printer (A) has a much higher starting cost, but a lower cost per page. The second (B) has a lower initial cost, but is somewhat more expensive per page. You know that eventually the first printer will be cheaper, since its cost per page is lower. The question is: how many pages do you have to print before you start to realize any savings? To answer that, you need to find the break-even point — the point at which both printers cost the same.

This utility helps you find that break-even point.

So what is this accuracy thing? I want the highest accuracy! In short, being less accurate makes the program much faster, since it doesn't have to check every possibility. In the example above, you might only care that the first printer (A) is cheaper after approximately 23,500 pages without knowing that it's actually 23,361. In that case, an accuracy of 500 would be fine.

Interpreting the results: from the example, if a break even point was found at 23,500 units, then you know that the first printer (A) becomes cheaper after about 23,500 pages. A value for each item is also displayed, showing you how much money you will have spent by the time you reach the break-even point.