This extension is a must have for developers, you can easily see your variables by just using a simple line.
Thank you for the developer.

I purchase this extension 3 days ago, I have to say this is the best extension among books & libraries. It is possible to full access to source code, you can use this extension for 5 sites, it has a nice feature for publisher and writer page which list all books, was added to the database.

On the other hand, this extention is lack of features which is very important for site for books such as:
1. it is not possible to add different metadata for each book, except for title, which is a huge disadvantage for SEO
2. no feature for adding ratings or comments
3. It is not possile to add url image on book page, it is a disadvantage if you have big database of books
4.on first page of library list of books only listed by catagories, it is not possible to list by writers or publishers on first page
5. you need to add writes and publishers before you add books which is another disadvantage if you deal with big databases

these are the first things I see I heven't chect the search feature yet...

in conclusion, it is not worth to puchase this extension if you can't manupulate the source code, but if you can it is a great time same for the ones who deal with sites for books.

It works very well for me now. nice guide for installation.
I think it is a nice tool for Joomla! developers.
This extension has very few and not very importatnt bugs like, you can not change the php file after you created it.
Thanks