I know you've heard this before and I'm probably preaching to the choir but I'm going to say it anyway.
Please don't buy fentanyl. Please don't sell fentanyl.
My brother, an experienced user of all sorts of drugs but a relative noob to the DNM, saw free samples of fentanyl available and decided to order one. He mentioned this to me and I told him I'd only ever heard of it in the context of people accidentally overdosing on it (I didn't even know Prince was one of them at this point) and I wouldn't touch it even if it was free. That was the last I heard of it and I forgot all about it until six weeks or so later.
The free sample arrived (I don't know from where because I never saw it) and what I'm guessing happened is this. It looked like such a physically small amount that he decided he'd huff it all in one go. His heart stopped, he collapsed and by the time someone found him, he brain had already died.
He was never a regular user of opiates and had never been addicted to anything. He had the money to buy other, better drugs if he'd wanted. He saw something new and free and decided to try it, just out of curiosity. He died of pure misadventure and stupidity.
If you're thinking of trying it, please don't. If you're selling it, fuck you. You've read enough stories like this to know exactly what you're selling.
I wrote this out in notepad and then went on r/darknetmarkets to post it only to find the top post is already about some even more dangerous version of fentanyl. Maybe that's the shit he had too, I have no idea.
Edit: If anyone happens to have a photo of how much fentanyl you'd be likely to get as a free sample or could take me one and upload it (with a ruler rather than a banana for scale) I'd appreciate it. I'm just curious to know what it might have looked like.
Fentanyl was the first drug I tried when i discovered the dnms. If you are aware your buying fentanyl than its your own fault if you od.Iff your carefull and do your research its the best bang for your buck, if someone tells u its oxy and its really fent, than that asshole should die, but if you buy fent knowing what it is, and you stil manage to kill yourself then thats your own stupidity and evolution working together