Here in Mass gas in no name stations are running around $2.05 per gallon, a lot less @ BJ's, while in big name stations are 15 to 20 cents higher. Feels good at low cost gas when filling a 80 gallon ...
I used to drive gasoline tankers I would load at a Chevron Refinery and deliver the gasoline to various other gas stations. That's why you see a lot of gasoline tanker trucks without a big name oil company printed on there equipment. Another example is here in the Pacific Northwest we get our crude oil from Alaska all the gas stations do! It maybe a different station but it's all North Slope Oil.