When we're talking E0 is that also 89 octane or am I forced to buy something higher like 91 or 93 with premium? $0.10 more for a gallon at $3.50 will be a 3% increase in price, so it would mandate a 3% increase in mileage, or 1.2mpg (at 40mpg). Sounds fair. If premium is $0.20 higher it would become iffy.
List of all known ethanol free stations in the US: just click your state and read.
http://pure-gas.org/index.jsp?stateprov=MI