Why not using bitmixer which is a high volume mixer and trustworthy? I think they are morons to pay several times over the value of their transactions just to cover their tracks. simply by using a mixer there will be no more high fees. This is an indication of the consequence of using too much drugs, they are doing something totally unneeded.
The market must really be a big moneymaker so they are so willing to pay the transactions fees much higher than normal. Although Bitcoin is playing a part in the current of the dark markets, what I know is that even if Bitcoin can be shut down they can still find ways to fund their purchases. I believe that the dark net has been existing a long time ago under the radar though it is now being exposed most especially with that Silk Road saga.
Is the government powerful enough to control (at least) this underground market? Or just like Bitcoin, this is something beyond their own expertise?