Right now on Amazon you can pick up a FREE $1 Amazon MP3 credit with an Android app purchase.
You know what makes this a great deal? Many of the select apps for this promo are free.
The promo credit is limited to 1, so you can not “buy” all of the Free apps and get a bunch of free credits.
However, the $1 credit can snag you a free song!
You can see the FREE apps here!