EUGENE, Ore. – Average gasoline prices in Eugene have fallen 5.3 cents per gallon in the last week, averaging $3.24/g today, according to GasBuddy’s survey of 78 stations in Eugene. Prices in Eugene are 8.0 cents per gallon lower than a month ago and stand 23.2 cents per gallon lower than a year ago. The national average price of diesel has increased 0.6 cents in the last week and stands at $3.478 per gallon.