Gas prices in Arizona were up a little bit this week. Triple-A Arizona says prices at the pump were up nearly a cent to $2.95 a gallon on average. In Flagstaff, gas was down about a half-cent from last week to $2.98 a gallon. Some stations are selling gas for $2.75 and lower. In Prescott, gas was up nearly a half-cent to $3.03 a gallon. Some stations are selling gas for $2.85 and lower. Officials say as more refineries come back on line from routine maintenance, the more prices will drop.