@kjk
I realise the conversion algorithms may be complicated, but once they're written (which they are) then it's just a matter of passing a file through a filter. This is basically free.
@mcl
you say that e-books are a free ride, but they're not really because they share a lot of the costs of the paper book (e.g. editorial and marketing). They must therefore contribute to that. As e-book sales go up, paper will go down. If there were a soar in the sales of under-priced e-books the publisher would loose money. It's possible publishers don't want to create a precedent for very cheap e-books for this very reason. I agree with you that they're too expensive but it's not fair to call them a free ride.
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