Excerpts from a very illuminating discussion:

Greed, no doubt, exists on both sides, living as we do under capitalism, but greed alone doesn’t explain the dispute. Yes, Amazon wants to sell e-books for $9.99 or less, and Macmillan wants Amazon to sell them for $15 or less. But as Macmillan’s CEO John Sargent explains, in a statement released today as an advertisement to the book-industry newsletter Publisher’s Lunch, Amazon and Macmillan aren’t at the moment fighting to see who can make more money on a book sale. They’re fighting to see who can lose more money. This is a very peculiar battle.

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Most publishers have until now sold their e-books to Amazon for the same wholesale price that they sell their hardcovers–roughly half the hardcover’s list price. It is up to a retailer like Amazon whether to sell the book to consumers at its list price, as printed on the inside front flap, or at a discount. With e-books, Amazon has usually offered a discount so low that it actually loses money. That is, Amazon buys for $12 an e-book whose hardcover list price is $24.95, and then Amazon sells the e-book to its customers for $9.95.

Macmillan has probably been selling its e-books to Amazon at the wholesale price of about $12, and Amazon has been selling them retail for about $10. Macmillan says that it would like to sell its e-books at the wholesale price of about $10.45, and have Amazon sell them for the retail price of $14.95. In other words, Macmillan was offering to earn $2 less per e-book. Amazon, however, insisted that it would prefer to take a $2 loss on each e-book, instead, and became so indignant over the matter that it has now ceased selling any Macmillan titles, print or electronic. Macmillan’s proposal is known as the “agency model” for e-book pricing, and the company probably only dared attempt it because Apple has promised that it will sell e-books for its new tablet on exactly those terms. (Amazon has said that they’re willing to accept the agency model, starting in June, but only if an e-book’s list price does not exceed $9.99.)

Thank you, Mr. Shatzkin.