Piranhas is a service that lets you compare book prices on five country-specific Amazons (US, Canada, UK, Germany, and France) and Book Depository to find the cheapest store for your books (including shipping and currency conversions).
This Alfred 2 Workflow lets you search for books on Piranhas right from Alfred. Simple use the piranhas keyword with your query as an argument.
Download: Piranhas.alfredworkflow