Books links for Google Play books not working correctly
2. Search for the book. IMPORTANT NOTE: If the book is not for sale on Google then you will not find an id that will work with AHS. Once the book is for sale on play.google.com the id will work and you can enter it into AHS.
4. Enter this code in the Google id field on the book's AHS Details tab
5. Save the change.
The bottom line is that Google's "Play" page appears to be their sales page for now. This Play page includes the sales link, the reviews, the series info, etc. The Google "Books" page appears to be an informational page, at least in the short term.