I looked over my recent sales and all of them were digital.
Lulu.com is working with other firms to publish their works as e-books, or is it i-books?
This is my author site on Lulu.
This links two books to Apple - Catholic, Lutheran, Protestant and Jesus Priceless Treasure.
I will be working with Lulu.com to make everything digital. I may add a price to some PDF downloads, but leave the rest free. Another way to distribute free to readers is to set up a public Dropbox. This is fun, because I am far ahead of my younger students in technology. To be honest, they are in the graduate program in adult education, so they are not computer science students. Still, I enjoy their responses to free TV broadcasting on the Net...and Tweeting a blog post while linking it on Facebook.
The two children's books are done. More will be posted on those titles tomorrow.