I now have three books live on Google Books and having activated them for sale on Google Play, all three pages are now showing a “buy the eBook” link. This happily takes you to the Google Play page for the book, but so far there seems to be no way to actually purchase the books yet. Plus, the price looks different to the price I set. And there’s no information about the book such as the blurb. And clicking on the Author doesn’t list the other two books.
So, not great so far Google. Seems you have a long way to go to catch up with this Self-publishing lark. You’re way, way behind the likes of Smashwords and Amazon KDP.
For the record, the books on Google Books/Play are