Best Book Deal

Compare prices at 47 online bookstores. Calculates tax and shipping cost.
http://www.bestbookdeal.com/

ISBN.nu

Compare prices at several online bookstores by ISBN, author, or keyword.
http://www.isbn.nu/

AddAll

Compares prices among 41 on-line bookstores, including used and out of print titles.
http://www.addall.com

BookFinder.com

Book shopping search engine, plus a meta search of 12 directories of used, rare, and out of print booksellers.
http://www.BookFinder.com

AllBookstores.com

Compare prices at over 30 online bookstores by title, author, ISBN, or keyword.
http://www.allbookstores.com

Compare Shop Books

Gathers prices from about eight booksellers.
http://www.CompareShopBooks.com

Campusi

Pricing search engine reviews over 40 online stores for new and used books, and locates coupons if available.
http://www.campusi.com/

Any Book For Less

Compares prices at 22 online booksellers, including delivery to US, Canada and UK.
http://www.anybook4less.com

PriceViewer.com

Searches and compares prices at major online book stores.
http://www.priceviewer.com

BookHQ

Provides free listings, and searches new and used prices from ten bookstores.
http://www.bookhq.com/

Campus Books

Compares prices and availability for new and used textbooks.
http://www.campusbooks.com/

FetchBook.info

Compares new and used prices among multiple book stores.
http://www.FetchBook.Info/

Bookchecker.com

Finds and compares prices for shops in several countries.
http://www.bookchecker.com

Fast Book Finder

Searches by title, author, or isbn and compares prices among online booksellers.
http://www.fastbookfinder.com

AAA Book Search

Compares prices at 44+ online bookstores.
http://www.aaabooksearch.com

The Cheapest Book

Searches US online bookstores and compares prices.
http://thecheapestbook.com/

Price Owl

Searches book stores and lists prices.
http://www.priceowl.com/

BookButler

Compares prices at up to 40 stores.
http://www.BookButler.info/

AllDiscountBooks.net

Compares prices from online retailers in US, UK, and Canada.
http://www.alldiscountbooks.net/

Power Book Search

Performs price comparisons of online retailers.
http://www.powerbooksearch.com/

GetTextbooks.com

Price comparison search engine.
http://www.gettextbooks.com/

Bookkoob

Compares prices at US and UK online stores.
http://www.BookkooB.net/

Abookbargain.com

Compares prices of books including shipping costs.
http://www.abookbargain.com/

BookCost.com

Compares prices at several online retailers, and displays current coupons available.
http://www.bookcost.com/

Get Cheap Books

Searches and compares prices at eight online bookstores. Includes used and out of print titles.
http://www.getcheapbooks.com/

Book Squirrel

Provides price comparisons including availability as well as shipping and sales tax calculator (based on zip code).
http://www.booksquirrel.com/

Saveonbooks.co.uk

Compare prices from UK online bookshops.
http://www.saveonbooks.co.uk/

Chambal.com

Compares prices across online bookstores.
http://www.chambal.com/

CheapestBookPrice.com

Compares prices plus shipping for audiobooks and print books at various major online retailers.
http://www.cheapestbookprice.com/

HeresYourBook

Compare book prices from new and used retailers.
http://www.heresyourbook.com/