Not many options at all. Only 3 in my city and I live in a very large city.
I have a handful of 5 gallon jugs I throw in the truck and drive an hour to fill them. Between the motorcycle and lawnmower and whatnot, I'll get about 3 weeks out of 30 gallons.
I could get it at the municipal airport 5 minutes away from my house, but they charge almost $6.50/gal. It's cheaper for me to drive the hour away.
My truck is new enough that it eats the e10 just fine, but my bike and small engines run way better on the pure stuff.