To find out whether they really work, we tried four of them—GoodRx, LowestMed, Mobile Rx Card, and WeRx—to price a month's supply of the cholesterol-lowering drug Lipitor (40 milligrams ...

That's according to new data from drug savings company GoodRx, which examined fill trends ... which have hefty list prices of roughly $1,000 per month before insurance or savings cards.