While I understand the anti-smokers concerns about our health, targeting roll your own tobacco for such a huge tax increase is counter-productive. Most roll-your-own tobacco is organically grown whereas the commercial cigarette farms use cheap mineral fertilizers which are laced with polonium.
It is the polonium which is the source of the major health problems one sees with cigarettes (but not with pipes or cigars). and, we know from Dr. Jeffrey Wigand's appearance on "60 Minutes" that commercial cigarette manufacturers artificially increase the addictive components in their products, something roll-your-owns do not.
It seems this tax is intended to protect the profits of the big cigarette manufacturers rather than to address the health issues.