I was at aldi's one day and the cashier told me that they are clocked on how many items are scanned per hour (minute?? Not sure of the time frame)... then I had the one cashier who banged my bag of chips around while she was trying to scan it. I was thinking of telling her nevermind cuz I didn't want smashed chips when the bag opened from her mishandling. She said "oh, this bag is open... do YOU want to go back and get another?" Uh. No. Forget about the chips. Then she called the supervisor over to void the sale and said to the superv... "this bag is open and she doesn't want another".
I do still shop there because I have many more pleasurable interactions and their prices cannot be beat :-)