For anyone wondering about the number of guides included in this box set, I can confirm that it is indeed 7 as per MaryMarsh's initial post. I just got my Pets guide, and in the back of that book, there is an advertisement for the box set with a picture. In addition to the guides listed in my post above, the box set also includes a guide for Generations which I'm sure wasn't released separately and something called "Exclusive Sims 3 Encyclopedia" with descriptions of objects from stuff packs, wishes, moodlets, skills, career tables, socials and more. So the box set does sound like a good all-round reference. Just a word of caution: I don't know what size these books are likely to be. If it's the same as the box set for the Original Sims, those books were quite a bit smaller than the standard Sims 3 Prima guide, and the print in them was also smaller. It wasn't a problem for me, but I think some people found the print hard to read.