This CD boxed set was originally $99 !

GTD® Live is the audio version of David Allen’s complete two-day seminar. This 10-CD set brings you the powerful principles of Getting Things Done®, including the Mastering Workflow, Managing Projects & Priorities models. Recorded live, this will give you a great hands-on experience with the GTD approach, at your own pace. Take part in the exercises presented, just as if you were in the room with David by your side. It’s a great way to get started with GTD, or refresh what you’ve already built and learned. 

10 audio CDs, approximately 9 1/2 hours of content.

Topics presented include:

See more info at: https://gettingthingsdone.com/2008/04/yes-david-allens-gtd-live-now-available/