I want you to think of a product or service that you buy or would buy regularly where the selling price is of utmost importance. Think of an example where price impacts your purchase; i.e. it goes on sale you will definitely buy and maybe multiples and then when it is not on sale you will not buy this item/service. What is it and why is the price such an important factor? Is it a luxury good? Are there reasonable substitutes available for less?

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