I don't have any interest in a disposable device, but if it's cheap enough to dispose of every week, almost anyone could buy one and then use it, conceivably, for years.
On the other hand, if it were edible, that would be amazing! It would give us a real retort to people who talk about the smell of a "real" book. "Yes, but I prefer the taste of ebooks," we could say. "Have you eaten Stephen King's latest?"
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