I have both black ink 1 and 2. 2 is about a Gig worth of data if you have everything (v.2).
I will say that I did a trial of webex (free if cancelled within 14 days) for free and I would gladly pay $100 for it today if I were training in a new employee for this biz. For a total noob, it's 100% worth it. For someone who has read WF for a few days, not worth it. Scale of 1-10, it serves the 0,1,2 groups. (1<10)
I'm conflicted if I want to throw this on a torrent or not, Jeremy Palmer did a really good job on these, they may be worth it to the groups listed above.