To try to figure out what the cost of an ebook ought to be, I'll assume that a publisher wants to get the same return on a physical and electronic copy. It's hard to find good numbers, but most of the ones I'm using come from a
NY Times article about this very topic and are in general agreement with what I was able to find elsewhere. I round a bit here and there to keep the numbers nice, but nothing more than a penny or three.
Physical:
Retail sale = $25
Publisher receives 50% = $12.50
Less author's 15% royalty of $3.75 = 8.75
Less printing, storage, shipping costs of $3.25 = $5.50
Less cover design, typesetting, editing costs of $0.80 = $4.70
Less marketing costs of $1 = $3.70
The publisher receives $3.70. This is not a $3.70 profit, but $3.70 income from the sale of the book.
The printing costs would increase per book sold by the total cost associated with unsold copies since they incur this cost regardless of sales. The design and marketing costs would decrease per book sold since they are a fixed value per edition. Marketing costs would vary widely depending on the author/title, and the article I linked cites a lower value for the electronic book's marketing costs.
To get the same income from an ebook:
Publisher receives $3.70
Marketing cost of $0.80 = $4.50
Typesetting, digital conversion, editing costs of $0.50 = $5.00
Author's 25% royalty of $2.78 = $7.78
Online vendor receives 30% = $11.11
Again, marketing would vary widely and marketing and editing costs decrease as the volume of books sold increases.
It looks like ebooks should cost less than they do, from my point of view. However, I also don't know what fraction of hardcover books are actually sold for the cover price these days, or whether the publisher receives their 50% of the cover price regardless of the actual sale price of a book.
The high cost of an ebook relative to a discounted hardcover is the primary reason I haven't bought an ereader myself. I feel no draw toward gadgety stuff, and with the cost of the device itself factored in, buying actual books is more appealing to me at this point, and it certainly costs less with my rate of book purchasing. Also, if I drop a real book, it won't break, it doesn't run out of batteries, and I'm not going to have problems with planned obsolescence in 4 or 5 years.