Dealers make less than .15/gal. My best friend owns a station, he told me what he makes. You have to remember that if your station is in a good location it is pumping MILLIONS of gallons..... They make different amounts on different grades btw. My buddy makes like .03/gal on economy if he only sells a million gallons, and he sells alot more than that, he made 30,000.00, now if he sell 3-5 mil...
Also Massachusetts has a fixed gas tax and it hasn't been raised in a long time.