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How about the people who bought the Factory Workshop binders that are now not as valuable because most people will go for a cheaper CD version?
They both have there value. The WSM is much better for wiring diagrams that need to be studied as you can lay them out. I use the CD to print off what I need to work on and take that into the shop so my manuals stay nice and clean. Besides, ever try to read the CD from a laptop on the toilet. That's when a printed book comes into its own