I'm up to volume 10 but I'm missing 8 and 9. I saw them all at a used bookstore except for 9 but I only got 1-5, 7, and 10 because those were the only ones in good shape. 6 looked like a dog had gotten hold of it (ordered an intact one off of Amazon) and one of the pages in 8 looked like someone cut in half with scissors. That's not even used book value anymore.