I have both of the "workbench" books. When I saw that Christopher Schwarz wrote a book on workbenches I knew I had to get it. I could have bought it off Amazon, or even Barnes & Noble for almost $10 cheaper. Instead I bought it off of Christopher's site, for two reasons. Firts, it comes with a CD that contains the book and drawings. Second, it's autographed.
If you've never checked out Christopher's blog, I have it in my Links section. I recommend checking it out.