Re: The Bible
It's hard to say the bible's place in the best-seller lists. Leaving aside bulk orders (which I think count?) there are so many versions. Probably a dozen or so 'mainstream' (NIV, NKJV, American standard, etc) of which many are published in different formats (plain bible, study bible, bible in a year, amplified bible). And that's before you get on to less rigid translations like The Message which are very popular but cannot really be classed as translations.
You'd have to combine the sales of dozens of different books to get a meaningful figure. Maybe this is done as a matter of course, I have no idea?