People are unable to accurately judge quality before they make a purchase, and often well after the purchase the quality is uncertain too. Who knows how long it

People are unable to accurately judge quality before they make a purchase, and often well after the purchase the quality is uncertain too. Who knows how long it'll take before you find out that your cheap USB charger was made of shoddy materials and will catch on fire when it fails? But you can know the exact price before the purchase. People are optimizing based on the information they have.