Remember how at one point Amazon encouraged its customers to showroom their local stores and then buy from Amazon.com?
Many retailers were upset about that stunt, and now a developer has turned the tables on the retail giant.
Actualitte has reported on a new plugin called the Amazon Killer which gives book buyers in France a new opportunity to browse for books on Amazon.fr and then buy the books in a bookstore.
The plugin takes the ISBN for the book a user is looking at and searches the Place des libraires website for a local French bookstore which has the title on the shelf. If the ISBN corresponds to a locally available book then users will be prompted with a second buy button which will lead them to Place des libraires. This is a cooperative search engine that can search the catalogs of 460 bookstores in France, and it boasts 1.1 million print and digital titles listed.
Not having an account with Amazon.fr and not speaking French, I haven't had a chance to use this myself. But the demo video makes it look pretty simple.
I'd like to see a similar plugin for the US, but I'm not sure where it would send you. The best options for a search engine which could help you find other booksellers also belong to Amazon (AbeBooks, BookFinder). But I have found them to be relatively unbiased, so perhaps they will serve this purpose.