Southern California, home of the 3.4 car family for two licensed drivers.
87 octane $2.57 per gallon
89 octane $ 2.67 per gallon
91 octane $2.87 a gallon
Or for full service
87 octane $3.37 per gallon
89 octane $ 3.47 per gallon
91 octane $3.57 a gallon