@jamesboyles I don't notice vacuum with these their products, it must be inert gas filled.
Klotho or other larger proteins are manufactured somehow and are for sale readily, they don't have to be manufactured exactly like smaller peptides. Also, I wouldn't say they are cheap either.
BioLongevity Labs combines a truncated version of the native (natural) a-Klotho (1,012 aminoacids) with a proprietary 29-amino acid albumin-binding construct.