According to Weber's law, a consumer will notice a 25 cent rise in the price of a 50 cent product more than a 25 cent rise in the price of a $10 product.

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Weber's law states that the just noticeable difference (JND) between two stimuli is proportional to the magnitude of the stimuli. Therefore, a 25 cent increase on a 50 cent item (a 50% increase) is more noticeable than the same increase on a $10 item (a 2.5% increase).

According to Weber's Law, a Consumer Will Notice a 25