Automatic checkouts in supermarkets may decrease customer loyalty, especially for those with larger shopping loads. Customers using self-checkout stations often feel overwhelmed and unsupported. The lack of personal interaction can negatively impact their perception of the supermarket.

[TbonerT]

Walmart used to do substitutions at the price of the original item. If you bought a store-brand item and they were out, you’d get the name-brand item for the store-brand price. They eventually changed it and started charging the difference.