Well said and good point.
I know that many publishers are justifying that they are charging near dead-tree version pricing because of "costs associated with conversion to eBook formats." That's a sham, because 99% of the eBooks out there do not even have formatting as nice as the printed books, nor do they have the photos or imagery associated with chapters. At least, the Amazon and Apple eBooks. I have seen some PDF eBooks from notable publishers (O'Reilly and Pragmatic) who format their eBooks quite nicely.
If publishers can make their eBooks look nearly as fantastic as their dead-tree versions (if not better), then I think it's fair to charge near dead-tree pricing. Otherwise, who are they fooling? Most of them are doing a "print to PDF" not actually formatting it.