Avgas has a little more tax than .40 and I bring back up to 80 gallons 2 or 3 times a week. I am sure they do not care, but it gives me a little personal satisfaction to have a beer that tastes good to me and a 10% discount on the groceries I bring back. My shrimp seem to be a little fresher also.
avgas is taxed at .194
you should hit up your local breweries for better beer. i found that the Belle Isle brewery here in OKC was awesome. 64oz growler for $13