At least that's a tangible good worth the money it costs (ethics and cultural norms aside.) Her point still stands, that most functioning adults would not spend

At least that's a tangible good worth the money it costs (ethics and cultural norms aside.) Her point still stands, that most functioning adults would not spend $100 on something like that without at least thinking it through. But a kid with zero concept of earning income would certainly click that button with no extra thought.