THE DARK PATTERN THAT COST AMAZON $2.5 BILLION

Summary from the TLDR Design newsletter

Amazon leverages dynamic pricing and deceptive interface design to influence buying decisions, including inflating reference prices to create the illusion of discounts. It also uses manipulative UX patterns in Amazon Prime sign-ups and cancellations that prioritize short-term gains over user trust, but such practices can harm brand value and increasingly carry legal consequences.