Gracias 😊I just heard of Humanin today.
Amino Annex sells it for $25 for a 2-mg vial, but they seem to only ship domestically (to the rest of the US) and to Canada.
WWB has it on their China pricelist for $180 for a 10-mg kit, and shipping is $50. Even though WWB doesn't provide vendor testing, I partially trust them, based on the excellent third-party tests I have seen for some other things. There is more info about WWB at Meso.