The single most highly traded item in terms of volume on most of these markets is pot, then non-addictive (but still potentially dangerous) drugs like MDMA. Th

The single most highly traded item in terms of volume on most of these markets is pot, then non-addictive (but still potentially dangerous) drugs like MDMA. The number of hardcore opioid addicts that have a laptop, internet connection, knowledge of bitcoin, someone to convert cash into a bitcoin balance, a tor installation, a good address to pick up from and a willingness to wait a week to get their fix delivered is likely fairly small.