Suppose you go to a retailer's website and print a coupon that gives you a discount on your next purchase at their store. But your friend, who also plans to purchase there, can't be bothered. You are revealing to the store that

Question

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By printing the coupon and using it to make a purchase, you are demonstrating that you have a higher willingness to search for discounts and are more price-sensitive than your friend who is not willing to bother with the coupon. This suggests that you have a higher elasticity of demand than your friend.

Suppose You Go to a Retailer's Website and Print a Coupon