Tipped off via @AndroidPolice on Twitter.
This store carries multiple paid apps for free, changing weekly, in a similar model to the Amazon appstore free app of the day.
THIS IS NOT A PIRATE APP SITE! Discussion of apps or websites that are not reputable is forbidden at DXF. So don't bring up that "great place to find free apps" please.
Currently featured apps include SwiftKeyX keyboard and Tektrack mobile security.
Follow the link at the bottom of this post, click on an app "buy" button, and a prompt will appear. Dl the GetJar.apk from there and install.
EDIT: Here is a DB link for the .apk