The income effect is part of the Law of Demand. It says that if you save money on a purchase, it is like earning the difference between what you would have paid and what you did pay. For example, if I am on my way to Walmart to buy a LEGO set for $20, and I stop at a yard sale on the way and find the same set for $5, it is the same as earning $15. | The income effect is part of the Law of Demand. It says that if you save money on a purchase, it is like earning the difference between what you would have paid and what you did pay. For example, if I am on my way to Walmart to buy a LEGO set for $20, and I stop at a yard sale on the way and find the same set for $5, it is the same as earning $15. |