Costco is also saving themselves money by making sure that people don't return HP printers because they don't work. When you have a known liberal return policy

Costco is also saving themselves money by making sure that people don't return HP printers because they don't work. When you have a known liberal return policy that is a feature of the membership, you have an incentive is to make sure that customers don't want to return those products. So, I see it less as a trusted environment and more as a seller motivated to make sure returns don't hit their margins. A consumer-positive/trusted environment is still be a good thing for consumers, regardless of if the creation of that environment was motivated by the bottom line.