You may not have noticed, but gas prices have gone down. For the first time since mid-March, the national average for a gallon of gas has dropped, down two cents to $2.94. In Missouri, the statewide average stands at $2.70. That’s down one cent from a week ago but is up 16-cents from a month ago. In the tri-county region, the average price in Camden County is $2.66. It’s $2.67 in Morgan County and $2.69 in Miller County.