Update. I've finally received a link to this vendor. Red flag, stay away from this dude. His shop contains countless of drugs, some illegal, some not. But all of his products show stock images. You can pretty much find them all via Google search. For example, this guy sells 10g of MDMA, the image was stolen from a reddit post. The image showing N is fake too, it simply shows a bag that says "Nembutal pentobarbital" on it and that was clearly added via photoshop. Another listing showing a small bottle of N is stolen from another clearnet scam website that sells N. Other images were stolen from Alibaba or actual pharmacy shops. None of his offers show his(!) actual product. It's all stolen. This dude doesn't sell N. I'm even surprised that this scammer has an actual reputation of selling legit SN in this community because I wouldn't touch his shop with a burning fork. You can savely assume that all products in his shop that show illegal substances are fake. I'm not sure why he is doing that, either hungry for money or law enforcement trick.
Once again people, as long as this person isn't confirmed in a new PPH edition, I would stay the hell away from this vendor.