A total of 2 reviews of this product on Reddit.
13th Nov 2017
You can get the same thing for $10 on Amazon. I’m using the 97 one right now and it’s decent for the price.
5th May 2016
Secret key is not full size, Mizon is full size and I am not sure if it is an ampoule but it’s this one. All of this shipped would be $53 shipped. Let me know if that sounds good and I will PM you my info!
Edit: Changed price to reflect your edit. Please just respond to my comment if you want to add anything else.