It costs less, as it should since there's no paper involved or anything, and it has a snappy, slightly different cover, and a hyperlinked table of contents and EVERYTHING.
As I said over on my other blog, it's been five years in the making - now it is here. As of today, anyone the wide world over can get the paperback, here.
Soon it should be generally available on Amazon, in paperback and as an ebook. Please don't hesitate to click that link or to get in touch.