To someone who has read the book, and loves it, this doesn't add a lot of value
There are a
handful of truly new things in this lecture. Some of them are very interesting, no doubt. You
might even add them to your routine.
But really, for the price it's not even close to the
bang for buck value of the book.
Yes, there are some new things in the lecture, but....
hmmmm... not all of them are practical.