Amazon was catalogued by the UXP2 Lab over its purchase options. According to the entry, the site defaults to a subscription instead of a one-time purchase.
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Amazon: Defaults to Subscription.
“Defaults to subcription instead of one-time purchase”
Disclaimer: examples in the Hall of Shame are generally drawn from public submissions and cited sources; they have not been independently verified and may contain inaccuracies. They are presented as illustrations of design patterns, not findings of fact, unlawful conduct, or intent.