Average retail gasoline prices in Indiana have risen 6-cents per gallon in the past week, averaging $3.57/g yesterday according to GasBuddy's daily survey of over 3,000 gas outlets in Indiana. The national average has increased 1.3 cents per gallon in the last week to $3.44/g, according to gasoline price website GasBuddy.com. Prices yesterday were 4-cents per gallon lower than the same day one year ago and 13.2 cents per gallon higher than a month ago.