Gas prices have dropped by more than fifty cents in the past month around the state and what you’re paying at the pump now is about a buck cheaper than this time last year. AAA Nevada said in its monthly gas survey released Tuesday the average price for a gallon of regular unleaded is $2.33. That’s 53 cents cheaper than the last survey issued Dec. 9. The cheapest gas is in Carson City with an average price of $2.16 per gallon. . Reno reported an average of $2.47 and Sparks $2.44.