Sometimes a fight occurs when the transaction has an issue with the pricing. But I have noticed that those fights are not really about the price but more of the principle. I get annoyed when I buy something that I feel shortchanged like yesterday my wife bought a kilo of fruits that when I used the scale at home it was only 0.8 of a kilo. It is the principle that matters most.Why get angry when she paid the price you wanted, no doubt she would feel cheated thats our humans are but either she increases her price which would be unfair to the other woman, I see no reason why she should fight over that