Advertise app available on amazon appstore

Is there any solution for advertise app from amazon appstore (PPI, CPC) ?

Amazon offers their own service. It’s invite only from the Dev side of things, not sure for advertisers.

Nobody knows a solution for advertising application on amazon appstore?

Misolok, there are some ad networks out there (e.g. Admob, Millennial Media, etc.) that let you target for Kindle Fire devices, which 99% mean you target Amazon users. These are CPC-networks, and the click costs seem to be quite high though.

Is there any new solution for advertising on amazon appstore?