Why is the price of gasoline always...

There was a time when gasoline taxes were less than a cent per gallon, so gas sellers had to devise some way to build this into the price. For example, the tax on 49-cent per gallon of gas (that would have been many, many years ago) may have been 0.25 of a cent, so that price would be correctly spelled out as $0.4925. Although taxes today are much more than 1 cent per gallon, the practice of listing the price with fractions has remained customary.