My first reaction to this was, "OMG, a new book from pg! Why didn't I hear about this before"? The comments here cleared up things for me. I think having the word "interview" in big letters somewhere on the cover would be less misleading.
You do explain things somewhat it in the Product Description, but in a very PR way "hold the answers, etc." without mentioning the book is based on the interview. Some people here say that it's just the interview? Can you clarify if it is more than that and if that what have you added?
In addition to the blog post, I think you should have a better description on Amazon.
SmarterComics has converted quite a few business / entrepreneur books into comics:
pg knows about this. It was done by a YC company. My site wasn't scraped. This is more than the interview.
Also, entrepreneurs like pg are heroes. Till I'm old and unable to move, you should expect to see me experimenting with ways to get their stories out. If I knew how to draw comic books, you'd see my interviews in the comics section of amazon too.