Not so sure: When buying something(say a white good) - how do i know how long it would last and whether it's worth the price ? And that's information companie

Not so sure: When buying something(say a white good) - how do i know how long it would last and whether it's worth the price ? And that's information companies hold, but don't share. And it's intentional. And if Americans could have found product with double the life and only 30% increase in costs - it's a great deal. And it's definitely techically possible, for many products.