This site provides unbiased price comparisons among over a dozen online stores that are either booksellers, auction sites, used book dealer networks, or a combination of two or three. We retrieve prices that as timely as each bookselling site allows and display them in order of lowest available price to highest price. (You can also view results by fastest overall shipping time.
isbn.nu was originally designed as a proof of concept for simplifying URLs and information structure around books. Over time, it has evolved into a way to find the book you're looking for without knowing an ISBN or concerning yourself about which edition you need to find--isbn.nu lists all editions for a given work, such as hardcover, paperbook, and large type formats, whenever you view a given title.
We list over three million titles, both in print and out of print, and accept no promotional fees for placement. We do include extra information for some bookstores, such as first editions and signed copies, and provides links to other searches at stores when we find no price results for a given book.
For customers outside the U.S., you can choose a variety of shipping methods and enter your current exchange rate to see the results in local currency with the full price of the order (for a single book).
Prices are stored for up to a day, reducing load on online bookstores for popular titles. This system redirects using affiliate links in many cases, generating revenue via commissions from sales that result from the end of a journey that starts here.
isbn.nu is designed for manual, individual use. We reserve the right to block access to any computer or system that makes large numbers of requests over short periods of time. For a variety of reasons, we cannot allow our site to be used as a large-scale research tool; there are tools one can license for that purpose from other firms.
About the Owner
The owner of this site is Glenn Fleishman, a freelance journalist, consultant, and programmer. For more about him and his other projects, consult his Web site.