No, thats some AI search junk response.
They typically pay Spot + transport. Then they add retail taxes. But its still not razor thin - they typically are making 30 to 40 cents per gallon gross after transport after tax. So then yes, they need to pay costs out of that, like any business.
Your a businessman - use your common sense and ask yourself this. If its such a razor thin terrible business, why is Wawa, buc-eez, quick trip, circle K and the rest expanding everywhere they can. New stores everywhere. Its not because there loosing money is my guess.
What is interesting is if you look at Spot and retail before this started, the spread was actually more - over a dollar. So there margins are getting compressed now comparatively.