But this wasn't. And while, even without meeting her, I feel comfortable saying the OP wouldn't then bring in a gaggle of friends the next day claiming the same "confusion" to the point the manager ends up giving them all the non-sale, non-loss leader item at the same price he charged the OP, the typical scammer WOULD. In fact, it's not unlikely that the average ethical shopper might take similar advantage of generosity.
Preplanned/prearranged/normal store (chain?) procedure - NOT due to customer misunderstanding.
We don't know that the sale item was the store/private label brand, just that it wasn't Bush's. Sure, if it was the store brand, switching the customer over is good and the manager made a mistake (maybe other things distracted him during that five minute walk.
Actually some food is exactly the same. When I lived on the coast of oregon there were huge tuna warehouses, with stacks and stacks of canned tuna. Those cans were sent out to major company s (starkist, chicken of the sea) and private label companies. All the same tuna, just different labels.
I agree though that some things are not as good, but that's we always offered the customer to give it a try (if we were out of their brand, or they asked about our product) Minimal loss to us if they decided they still liked their brand better.
I have an opinion of people who spend unnecessary money on name brand non-food items that are exactly equal in quality and effectiveness to generics. Ditto for food. In many of the former cases, not only is the item identical, the private label is manufactured by the name-brand company (sure, sometimes it's not true - Shaw's equivalent of Garnier shampoo ROTS in comparison to the real thing... AND the price difference is only $0.30). But food is different. The quality, IME, is often vastly different.