When you are marking up pricing you may want your entire price structure round to the nearest nickel (1/20 of a dollar), dime (1/10 of a dollar), quarter (1/4 of a dollar), nearest 50 cents (1/2 of a dollar), or nearest whole dollar.

Another option is to always set to the same amount of cents; option include 00 to 99 cent.

Of course, you could just leave it set to Do Not Round.