Gas prices continue to be inching lower in Arizona. Triple-A Arizona says the average price of gas fell nearly a cent from last week to $2.81 a gallon. In Flagstaff, gas was up two cents a gallon to $2.77 a gallon. However, some stations are selling gas for $2.64 and lower. In Prescott, gas is down about a half-cent to $2.91 a gallon. Some stations there are selling gas for $2.84 and lower. Officials say gasoline stocks are up, which has stabilized prices at the pump.