There are 3 in my city and I’ve been using them exclusively for a long time now. I get at least 15% better fuel mileage than with E10, and the price difference is well below 15%.
the pure gas where I live is 20 cents more per gallon.
but it is worth it to me, esp for my tools like power wagon, chain saw, lawn mowers, weed eaters. I’m over 60 and alone; it’s tough managing all these tools with that ethanol gas.