BTW, I've gotten some questions about permafree, so I will just answer them right here.
The difference between permafree and free is that free is what you get when you go through KDP Select. You can have your book free for five days out of the 90 that you are in KDP Select. Which is an excellent way to give your book some exposure, particularly if you have a series. Permafree means just that - the book is permanently free. For as long as Amazon wants to make your book free, it will be.
How does that happen? Through price-matching. That means that you upload through other channels your book as free. Google Play and Kobo, so far, are the only two channels where you can easily upload the free book. On Nook, you have to go through D2D. On Apple, you have to either sacrifice a goat or go through D2D to get your book free. Your choice.
So, then, next step. You contact KDP support at https://kdp.amazon.com/contact-us
and you inform them that your book is free on Google Play and Kobo, and send them the link. And, voila, you might have a free book in 24 hours! At least, that was how it went with me with Broken, but perhaps I just got lucky. With Beautiful Illusions, it took a tad bit longer, because I didn't upload to Google Play, and I was still going the report a lower price route, which is an inefficient way of accomplishing the same thing. You basically go to the your books page, and scroll to the "report a lower price" thingy and report your book being free. Then try to get all your friends to do the same, and post on the Kboards message thread having them all do the same thing. Then wait. Then repeat. Then sacrifice a goat. Lots of goat sacrificing there.
And that's really it. A PIA, but worth it, so worth it....