I totally agree that the cost should be less for those who are certified.  Based on the current prices that's similar to the black market, I also agree that there won't be much problem with the products hitting the black market.  On the other hand, if the cost is substantially lower than the black market where the profits outweigh the risks of getting caught, it definitely will hit the black market.  We already have problems with prescription meds being sold on the black market.  This wouldn't be any different.