To clarify, I *did* ask the author

Her reply was that she was sending me a coupon code to download the book. Which, again, is nice, but only helps ME decide

The other issue for me is a workflow one. I do most of my sampling on the iPad during breaks. If I have to download the book and load it onto the reader, that happens at home and by the time I get home to do it, I probably won't remember that it's there.-