I may have a solution for you, that is 100% legal.
Using all natural tobacco and filling tubes with it.
Will cost you about $35 per carton, might be able to go down on price if there is enough bulk. Been smoking this for a cpl of months now. Commercial smokes (Marb, Cam3l, Newp, etc.. have 499 chemicals in them. The natural tobacco tastes about the same and FAR less chemicals.
If you are serious, let me know and I will talk to my contact about sending some your way.