When the market goes up the price is usally reflected in the price of gas the next day but not usually at the pump untill some days later. Prices also seem to go up before it is traded higher and that might affect the market. Anyway that has been my experiance. I usually don't worry about it that much because most of my customers are going to only buy 5 or 10 dollars at a time no matter the price. I knew before I ever got pumps that I would be lucky to make any money at all once all the expencies were paid. I make money inside the store not oudside.