Where did you hear about the NCLEX book? If it is a teacher recommending a book I would get it. However, as J1's most of the testing information comes from the lectures and the text,...except concepts. The teacher for that class pulls questions from unknown sources,lol. I didn't buy the package I bought all my books from amazon and saved a TON of money. I would say that PDA's are helpful but I don't know anyone who has them at my level.
Also, if you are taking patho. next semester I would recommend that you do NOT buy the book. I did and I haven't opened all semester and have been makung A's in the class. I would, however, advise getting the workbook.