$2.58 for regular here, $3.07 for (probably stale) high octane. If we were concerned about improved emissions we could blend an isobutanol oxygenator that is stable, doesn't absorb water vapor and is refined directly from fossil fuels and natural gas, instead of "green" corn ethanol that requires spraying pesticides, soil erosion, environmental loads of creating renewable biomass such as deforestation of wildlife habitat, and we'd have a much better fuel.
Already, isobutanol is being formulated into motor fuels as an ethanol replacement:
"Gulf Racing Fuels will create three new fuels that will target marine uses and all-terrain vehicles (ATV). Each fuel will use a 16.1% isobutanol blend for delivering lower emissions and superior performance characteristics. These fuel blends are designed to meet EPA emission requirements for marine and off road engines without suffering from water solubility issues."