Dude, I know a lot of people in this community and a few others on the darknets (on Tor and I2P), and I don't know anyone who has purchased from the independent vendors that are listed on the wikis, not the drug vendors, not CC vendors, not computer equipment vendors, not assassins, no one. The few cases I've heard about have universally involved scams. Forget about them. Stick to the centralized markets, and obviously 90% of that activity and 90% of those reviews are right here on SR. I'm not shilling for them, it's just a fact. You won't get better information about vendors than right here. You stand the lowest chance of being scammed right here.