If I go to the 'big city' nearby, I pay a bigger premium for e-free gas (Shell brand in the big city). But if I buy in either of two small towns, it's far less expensive. I just bought some today and it was $2.70 e-free and regular unleaded was $2.40. Not too bad a markup. It is 87 octane. The other small town store has e-free gas only and it has 87, 89 and 92 I think it is.