Very interesting!
I see that to enroll and participate in their program, one must be a US resident; have private coverage as insurance; and be using an eligible CSL Behring therapy.
Once enrolled in the Behring program, one begins earning an Award Certificate for every 3 consecutive months of therapy use.
Each certificate is worth a 1-month supply of therapy up to the maximum amount redeemable in case of insurance coverage interruption, see
_https://www.cslbehringassurance.com/_
I'm going to sign up for it, just in case!