I have no idea who's selling what but you should be very skeptical when buying black market peptides, or any drug really.
I checked that thread on PM and what a bunch of retards all around.

One thing is certain; the placebo effect is real strong. Every one of us is susceptible. It has been noted that whenever a new drug is introduced to the market (legit pharm drugs) it works real well. It takes a good while to see what it really does, if it even works at all... and for the side effects to show up. Doesn't matter how extensive the human trials have been. Moral of the story, buy any new drug just as it enters the market, chances are it will work amazingly. At least you'll think it does.
Another thing. There not a damn thing these companies selling peptides can do about someone talking shit about their product. Because what they're doing is ILLEGAL. They can say their product is made in the US but they'll never say where or who makes it. Why wouldn't they if it was so fucking legal like they claim?