Very different thing.
The overhead in publishing tends to go on stuff like editing, without which the product would likely be rubbish. Hence why e-books cost about the same as hard copies - the actual production costs of a dead-tree book are trivial. Quite a lot of self-published e-books are turning up these days, but they're rarely good (more here).
(wellgroomedwookiee is a filthy-minded hobgoblin, Tue 14 Sep 2010, 10:25, Reply)