Where can I buy the S.L.A.M dunk

Hi, everyone.

I am a student in China and I use Parrot Bebop2 for research. I want use the S.L.A.M dunk to obstacle avoidance, but I can’t buy it on the official website. So I want to know where I can buy the S.L.A.M dunk now?

Thank you very much!
If you have any idea you can connect me by zhongtaovip@gmail.com.