The primary distribution channels, pharmacies, want nothing to do with grey market suppliers. There's also not a lot of direct price sensitivity. People with 3r

The primary distribution channels, pharmacies, want nothing to do with grey market suppliers. There's also not a lot of direct price sensitivity. People with 3rd party insurance have relatively inexpensive copays. The poor have access to Medicaid. In neither case are you paying full-freight out of pocket. So you've got no mass distribution channels and a user base that is shielded from the true cost. People do try, drug co's all have "anti-diversion" strategies, but it's pretty well contained.