Well, I don't think Personna's going to give us shavers an exact answer to all of this... the mystery of it all is making them money..
Nobody would buy the Meds anymore (most likely) if we were told they are the same as the Labs....
I don't think it's much money. The regional sales manager quoted in one of the threads was surprised to hear that the blades were being used for shaving, so I suspect that 99.9% of the market for Med Preps is hospital/medical. If the medical industry no longer needed those blades, I think we shavers would be out of luck.