There's an asymmetry because Amazon can "afford" to double check everything? How? They lists millions of items. You're only in the market for a few. They're good at inventory management, but the scale is crazy which is why this mispricing is happening. Besides, I don't see why them "being able to afford" checking has to do with someone exploiting a mispricing, from a moral sense. Are you punishing them for not doing so and creating a financial incentive to be more prudent? Seems like a stretch.
> You will get your package at home and then you will be informed that the price "was a mistake" and was 10% more expensive. They will print prices in adverts and then say that it was a mistake when people gets to the shop.
It's ironic that many people still believe the narrative that corporations are evil and would screw over their customers at any chance while at the same time living through the greatest upheaval of popular consumer brands in history. Amazon wouldn't do that not because of benevolence or legal reasons, but because its not in their interest to upset and screw over repeat customers for 10% and the operational headache of somehow retrieving your item. Also considering that Amazon receives billions from Prime and that would likely drive down subscriptions. Some companies practice deceptive advertising, but these are the companies that are primarily losing favor to new more honest competitors due to the competition.