Intending to purchase laundry detergent, Wendy went to her neighbourhood supermarket where her favourite brand was advertised on sale for $4.99 for a 5-kilogram box. When she arrived, there were no boxes of her brand left but the store's house brand was prominently displayed for sale also at $4.99 for the same size box. At the checkout the price appears as $4.59 when the clerk scans the UPC bar code. Wendy is no longer entitled to a box of her favourite brand at the advertised price since she substituted the house brand.

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The Answer of Intending to purchase laundry detergent, Wendy went to her neighbourhood supermarket where her favourite brand was advertised on sale for $4.99 for a 5-kilogram box. When she arrived, there were no boxes of her brand left but the store's house brand was prominently displayed for sale also at $4.99 for the same size box. At the checkout the price appears as $4.59 when the clerk scans the UPC bar code. Wendy is no longer entitled to a box of her favourite brand at the advertised price since she substituted the house brand.

Intending to Purchase Laundry Detergent, Wendy Went to Her Neighbourhood