Why would they get busted up, most of them use the same security as SR, and on a lot of them GPG is mandatory and using fake ID boxes is standard. The noob ones get busted sometimes because they have shit security, but even that is pretty rare. Some of them are completely closed to new members and only have like 80 members who have been working online with each other for many years. Even most of the bigger ones only have a few hundred members and they are usually all screened and voted in. Even the clearnet ones tend to be fine because the members use Tor to access them, there are plenty of hosts who don't mind hosting small drug forums and nothing has ever come of it. I have seen LSD for as low as $120 a sheet for 100 packs. The lowest I have seen single sheets go for is $350. A few years ago $400 was the standard price for single sheets, but the past year or so the prices have skyrocketed and the supply has dried up.