Originally Posted by calvin-c
Why? Assuming they have the same content, of course. (Some books are dependent on illustrations that don't work well in all formats or on all devices-so I regard that as having different content.) Also assuming DRM-free, which gives them (IMO) the same functionality.
When you pay for a paper book, 80% of what you pay for is the physical-ness of the book (paper, printing, distribution, warehousing, etc.). Those costs simply don't exist for an eBook and, therefore, the eBook should cost less - to the tune of 20% of what the paper book costs.