yes he does charge but it is far more affordable than the international official labs.
I am sure people may still doubt you because the vial is open.
However, for yourself personally and your own peace of mind, you can send whatever the hell you want however you want -- it may not help you get a refund but it will give you real data so you know if you are correct or mistaken.
I hope to use his service myself soon just to quality check some things (I trust my sources but it never hurts to check just to be sure everything is correct).
Laboratory testing of AASs, GH, peptides...