@texbuck I have used gas buddy as well. That just gave me the price. I remember seeing protesters outside Kroger saying that they put water in their oil.
When my wife was living we would get a dollar a gallon off every month at Kroger. She was a big time shopper and cooked several meals at home, the more you spent the more you earned off at the Kroger pumps. Never noticed a difference in performance of my cars.
Costco seems to have the best price, but I am not often in the area. I use Kroger points as well. Lately, they seem to have elevated prices. Unless you have at least 20 cents off a gallon, it's just as cheap at other places.