Learn how rounding works. Seriously,
It's annoying and deceiving. Am I really going to buy less gas if you round up to the nearest cent? I still have the same amount of driving to do.
You can deduct that extra 1/10th back off of my gasoline purchase when I use my Sheetz card if it makes you feel better. "But everyone else does it", you say. Break away from the mold Sheetz. Be the better gas station.