Ebooks have reignited the question of what we're really paying publishers for – the physical product, or what's written inside?
If you think of books primarily as physical objects, then off course they'll seem a rip-off, because printing and distributing them is cheap. But as Levine points out, what you're really paying for when you buy a book is something different. You are buying the "text itself". And why is that so expensive? Because the publisher will, in many cases, have paid the author a considerable sum for the right to sell it. And because that same publisher will also (if they're any good) have ploughed considerable further resources into editing and marketing it.
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In other words, publishing is a business that incurs high fixed costs. And it's this, to return to my initial question, that accounts for the high price of (indeed the very existence of) hardbacks. The publisher needs to maximise revenues in order to defray its outlay. Some people are prepared to pay top dollar to have the premium product – a hardcover copy that comes out, crucially, months before other versions. So it makes sense for the publisher to offer it to them.
Source : http://www.guardian.co.uk/; William Skidelsky, August 4 2011