Paperback on Amazon
Nook (Barnes and Noble. Hopefully they will have the paperback version soon)
Just to let you know, the digital prices will not be staying at $0.99 for very long. I'm going to leave it at this price for a few weeks, maybe a month and then it will be increasing to $2.99 so get it while its still at the lower price!
Some of the pages are still being built (mostly just on Amazon) so if things look a bit off don't worry about it, you'll still get Eden just fine.
Don't forget to enter Electrifying Reviews Eden giveaway and please, help spread the word about the release!