Average retail gasoline prices in Indiana have fallen 8.7 cents per gallon in the past week, averaging $3.22/g yesterday according to GasBuddy's daily survey of 3,271 gas outlets in Indiana. This compares with the national average that has fallen 2.5 cents per gallon in the last week to $3.30/g according to gasoline price website GasBuddy.com. Prices yesterday were 3.7 cents per gallon lower than the same day one year ago and are 35.8 cents per gallon lower than a month ago.