Hi everyone Thanks for raising this question and for the interesting responses. Any good sources for doing the same with e-books? Not merely mass-market e-books (some can be found via addall and the like, see also this thread for more hints http://ebooks.stackexchange.com/questions/891/are-there-any-ebook-search-engines), but library e-books such as available on ebrary, myIlibrary and the like? Vendors of these platforms all seem to have come to the bizarre conclusion than defining new, platform-specific, ISBNs for these titles was a good idea. The (intended?) result is that title-matching and price comparison is frustratingly difficult. In my experience, ISBN APIs such as the ones discussed here http://journal.code4lib.org/articles/8715 often don't recognize "eISBNs". Any ideas? Thomas On Wed, Feb 26, 2014 at 6:55 PM, Joe Hourcle <[log in to unmask]>wrote: > On Feb 26, 2014, at 3:14 PM, Jonathan Rochkind wrote: > > > Anyone have any recommendations of online sites that compare online > prices for purchasing books? > > > > I'm looking for recommendations of sites you've actually used and been > happy with. > > > > They need to be searchable by ISBN. > > > > Bonus is if they have good clean graphic design. > > > > Extra bonus is if they manage to include shipping prices in their price > comparisons. > > > Might be too late, but : > > http://isbn.nu/ > > It doesn't include the shipping prices in their results, though. > > API is just appending the ISBN to the end, either 9 or 13 : > > http://isbn.nu/0060853980 > http://isbn.nu/9780060853983 > > -Joe >