This is a small company that can only deal with a limited amount of requests for free samples per month, so please be patient.
I just requested mine and I am not sure if I will receive it or not. (If not, I will try next month)
Here is the message I received:
Thank you for your interest in our products! If you are one of the first 150 customers to request a sample this month, we'll be shipping out your sample shortly! If you don't receive a sample in the next two weeks, please try again a the beginning of next month.