1.) Yep, I have lots of older OOP science books that look like they'll never have an ebook (or even another print) version-- I don't want to destroy my copies, so I need something other than a traditional flatbed scanner.
2.) The item you link to looks like a piece of crap. A resolution of 1,600x1.200 is around 1.8 megapixels. And you would still have the problem of distorted text at at the spine area.
Here is what I'm thinking about: