Here is how to check a pump to see if you are getting the right amount you pay for at your gas station:
Whichever grade you are using, put EXACTLY 10 GALLONS in your tank, then look at the dollar amount, if the dollar amount is not EXACTLY 10 times the price of the fuel you have chosen, then the pumps are rigged or incorrectly set.
If you do find a station that is cheating, contact the Georgia Agriculture Department, and direct your comments to Tommy Irvin, Commissioner. In other states contact proper authorities.
(rec'd via email from concerned citizen)