I bet if you add this new price point to the graph, you can plot a new curve that makes it not go to zero.

I called this graph ridiculously dumb and got downvoted for it.

The idea was ridiculous, but the thought experiment was fun. Still, hardware costs are not trivial. There's no way Amazon gives something away for free (with 10 ebook purchases) just yet.

That graph looks suspiciously like a countdown until the Fire would be released.