Pot is taxed at 25% of sales. I can't tell if you want it to be higher or lower. Taxes on beer and wine seem low in comparison:

Beer 8¢ per gallon; Wine 14% 67¢/gal., 14-21% 77¢ /gal.;

But maybe pot is taxed at a lower rate than spirits:

Spirits $22.73 per gallon