Although I don't agree with some of the ways things are done... a friend in the oil and gas industry explained to me that they go up when things like a cutback, or a shortage or say a disaster like a hurricane happens... because the gas station owner/operator has to think ahead to what it is going to cost him to REPLACE the gas in the tanks when he gets his next fillup... AND has to slide it a bit so that it doesn't go up $.50 or $1.00 the next fillup. Say they continued to sell the gas they got delivered for 2.75 a gallon... so with taxes and all they are getting 3.00 gallon at the pump... they have to pay their rent heat lights, etc and so on... OKAY everyone else goes up $.20 at this announcement but he does not so he sells out of gas in 2 days instead of 5.... he can't get a delivery for 3 more days until his scheduled one... his income from "convenience items" in the store goes way down so he is sitting on "nothing"... gets a new delivery and the price is up to 3.25 gallon...so now his gas is priced higher than every one else because they went up some and can afford to average it out a little and since they only went up .20 before , now they are only going up another .20 so they lose a little or just break even on the gas but they have business coming in the door.
I don't agree the way it works, but I do understand it after having it explained to me. It is all about margins...
Honestly, my grandparents had a gas station in Ct. when I was a kid growing up.... went through the gas rationing and even/odd days in the 70's... and I know for a fact that they made a few pennies per gallon on gas... and they did NOT have a convenience store... a soda machine was about it... they did some repairs but towards the end was just a gas station....this was 50 years ago.... but they had a steady clientele for gas and you could make it a little easier... then when the gas rationing hit, and all that, they finally sold out as the land was worth a whole lot more than they could make. It is a different ball game now than it was back then. Gas is actually just the "convenience" thing that gets the people in the door....