Pricey, but worth it. My one NBI course (so far) was about probate procedure. The course materials were/are excellent. The presenters ranged from above average to excellent. Let's talk about "average." My experience with "average" presenters is of those who do so out of the kindness of their hearts and without compensation. Often they're partners in a firm who had the slide shown and materials (often just prints of the slides) created by a junior associate and, on a good day, reviewed by the presenter perhaps an hour before the presentation, if at all. NBI presenters in my course were prepared, they'd done their own homework, knew what they were going to say (to varying degrees), and said it. If I had a criticism, there were one or two who might have done well to have done one more run-through of the presentation before the presentation itself. That said, the content of the presentations was excellent and matched by the program materials. A good seminar is one that you might have to look back at a year later to find slides and program materials that are more than enough to bring you back up to speed with the subject. The NBI course I took more than matched that.