Yeah, the password if found on the book on page 170-something if I recall, I never bought the book so I wouldn't be 100% sure. Hmm... you bought what was from Play-Asia, this reminds me of something I asked them about. Plus, my friend's guide book didn't have the starters picture on the front of the book if I recall.
It wasn't much of help, but I'm assuming that there won't be any starters on any guide you buy, my friend's friends bought the book and it didn't have the code for the starters. If you don't find the code anywhere, then you bought the new version of the old guide.
~Yui