The dust is settling on the, well, the dust up between Amazon and Macmillian over eBook prices. There are some excellent posts from Virginia Postrel, Lynne Kiesling, and Megan McCardle. Some great Industrial Organization topics here, like price discrimination, resale price maintenance, and why entry by Apple here is leading to higher retail prices. (Did he just say entry is leading to higher prices? Yes, he did).

Well, as we try to sort that out, it appears the dust is on the rise again, as a third publisher is demanding the “agency model” in the pricing of e-Books.

The future of the $9.99 e-book is in danger. A third major publisher, Hachette, is going for Apple’s agency model in order to sell e-books for up to $14.99 apiece, the company revealed in a memo to agents.

Following Amazon’s public dispute over e-book prices with Macmillan early this week, Hachette is also seeking a shift to the agency model, which allows the publisher to set the price for the e-book, while the retailer keeps 30 percent of the sales.

I wonder if that “agency model” bears any relationship to the “principal-agent” problem we will be covering in 450 after the break?

Stay tuned.