This is a freshly compiled textbooks database with 16,206 textbook records. Each record consists of the book title, authors and ISBN numbers (in 10 digits). All books are categorized by 26 different study subjects and referenced by Amazon book URL.
You can download the database here: http://www.thedataplanet.com/databases/textbooks-database.html
The samples are viewable here: http://www.thedataplanet.com/sample/textbooks/
Use the one-time coupon code COLLEGE to get $30 discount. It will be destroyed after whoever uses it first when purchasing.