I am amazed
The vast majority of the debate above seem to want to know the exact costs of the whole process in order so that they can come to some sort of "acceptable" profit margin value, or perhaps it should all be done altrustically at cost, as anything more is expensive?
Perhaps the reason that books are cheaper than e-books is that they won't sell if they were dearer, and once the paper and ink is used, if there is dead-stock around, it is probably costly to keep, rather than sell.
However, what I find suprising is that this kind of debate doesn't seem to happen in most other high margin industries, such as Fashion. Sure,you have the articles or investigations into people being forced to work in sweatshops and unsafe conditions, but that is morality. When a fashion house sells a dress for £200 that cost them £10 to produce (if that), no-one starts questioning if its really worth that margin, well some do, but not really a vocal majority. They just decide not to buy the item. It should be same with Books, Electronics and so forth. However, it seems nowadays, and often due to companies like Amazon, we have been given a sense of entitlement that makes us forget that without people being able to actually make a living out of making products/books/music, then there will be no new items out there - after all, why would I want to put some of the best years of my life, into something - when I knew at the end of it, I wouldn't make anything from it? Unless of course, there was alternative reasons (charity, etc).