You would be right if it was possible to estimate the quality of the items. But it generally is mostly impossible. Of course you can read about the products, y

You would be right if it was possible to estimate the quality of the items. But it generally is mostly impossible. Of course you can read about the products, you can read reviews, and then you can build some kind of belief around that. "From what I read, and assuming that the company doesn't bankrupt suddenly, and assuming that they won't deploy an update that erases all my data, I believe that this one is better". But that's a belief: you don't know anything about the hardware that is inside (other than a list of a few high-level components you think you understand, maybe) or about the software that is running inside.