For a long time, vendors held an advantage of having better information than consumers. Economists even have a name for generalised version of this fenomenon - assymetric information. What's important here is that Internet, by giving easier access to information. Bookchecker is one of the services that are helping this happen through comparing the prices of the books in various internet bookstores. Since they URL is quite simple, it didn't take much time to modify the regexp from my previous bookmarklet to work with Bookchecker

Bookmarklet is here.

Source code is here:

javascript:var%20re=/([/-]|is[bs]n=)(d{7,9}[dX])/i;
if(re.test(location.href)==true){var%20isbn=RegExp.$2;void(win=window.open('http://uk.bookchecker.com/'+isbn,
'LibraryLookup','scrollbars=1,resizable=1,width=750,height=500'))}

You may want to change the URL of the service depending on where you live (or at least buy books).

12:52:12 AM