"There's a man outside your building, right now, with this item. Order it within the next 12 minutes, and have it within two."
"Look out your window, he's there behind the bush watching you, waiting for you to press 1-Click®"
What if everything you bought from Amazon was automatically available for resale used after a certain period of time? You're thinking of buying the $79 textbook, but Bob who lives across the street will sell it to you for just $39 (Amazon gets $10 for facilitating the transaction, but will take the risk) and Amazon knows he's home right now.
Or you borrow it from him for a week for $19, he'll also lend you his blender for another $19.
My brain really wants this to happen, but my wallet doesn't. That would be really effective! If they really could get the costs right maybe it could happen - of course, the math just might not work out.
Isn't it a kind of self-fulfilling prophecy? As in, Amazon make a loose prediction about what you'll want to buy, but the hook of having that one available within 1 hour biases you to be more likely to buy that item. Then Amazon get to say "we're amazing at prediction!" whereas they're actually amazing at altering customer behaviour. Which isn't to say that that's a bad thing, it's just a bias which needs awareness.