One of the reasons that the prices are rather high in Washington State are the taxes placed on gasoline. (Don't even talk to me about how that money is spent).
That can make a difference of 50 cents per gallon. Other factors are going to be wages and property costs. If it costs a lot of money to pay for a lot and the building on it that will affect the price of gasoline. So will the costs of the people that work there. I could see my house and move into one twice as nice (or more) in a different state. I was shocked at how cheap very nice houses were going for in Las Vegas at the height of the pandemic. I could easily double the size of my house and perhaps add a swimming pool if I was willing to move then.