Well...I suppose I'm a traditionalist. I was approached by several people about writing an e-book...
I don't think e-books carry the credibility of a "p-book"...at least not author-wise.
But in anycase, you may see an e-book from me in the very near future. I'm trying to iron out the details...so that it can be totally (100%) free to anyone who wants to download it.
I've never heard of #5 and #7 on your list...are they e-books?
Also...I can tell you for sure, 100% of those e-books are Available for free download online, if you look hard enough. The only ones that aren't is mine and Llewellyn's latest book. But you can get a PDF of his 2002 effort (Anabolics2002) online pretty easiliy.