Well-organized resale markets have often helped, not hurt, producers of other durable goods. An efficient market for used books may allow publishers ultimately to charge more for new ones — and authors thereby to collect higher royalties — without necessarily sacrificing sales. Amazon's resale service has effectively split the market for new books in two: readers who buy and keep versus readers who buy and resell. They wind up paying different amounts for the same book, just as airline passengers pay different amounts for a seat on the same flight. Take, for example, Michael J. Fox's new memoir, "Lucky Man." The cost to the "business-class" customer who buys and keeps the book is $16. The cost to the "economy-class" customer is roughly $7, assuming the customer resells it for $12 and then pays Amazon's fee and commission. Splitting the market lowers the average cost of owning a book, creating more buyers.Link
Also, Tim O'Reilly has written a great note from a publisher's PoV:
Anyone who cares about books and authors should be applauding Amazon's expansion into the used book market, which is a real boon for consumers, and frankly, even for authors. As a publisher, I'm willing to take the chance that I'll lose a sale to a used book if that means that books that are otherwise unvailable can be easily found by someone who wants them.Link Discuss (Thanks, Dan)
I write books. My latest is a YA science fiction novel called Homeland (it's the sequel to Little Brother). More books: Rapture of the Nerds (a novel, with Charlie Stross); With a Little Help (short stories); and The Great Big Beautiful Tomorrow (novella and nonfic). I speak all over the place and I tweet and tumble, too.