One benefit of being a Sam�s Club or Costco member is having access to their gas stations. These gas stations are usually cheaper than major chains. The question is, is this gas a lower quality or are warehouse members getting a great deal? Discount gas stations, like those attached to Sam�s Club, offer high quality gas. These retailers are able to offer lower prices due to the large volume of gas they sell. Taking advantage of these gas stations is a great way to save money on your next tank of gas.