Well no kidding, Why do ya think they call them greedy marts? If they'll jack up the price of a hot dog, they'll do it to gas as well.
There’s a helluva lot more headroom to jack the price of soda and hot dogs than gasoline.
You may not know, but the major refiners typically only notch single-digit profits, and you can bet they’re not settling for being the lowest-compensated parties in the gasoline food chain.
You are paying for the “convenience” part of the store.