Current state weight-based taxes on marijuana bud or flower, per gram (and retail rates):
Alaska $1.76 (No retail tax).
California 33 cents (15% retail tax).
Colorado 34 cents (15% retail tax).
Nevada 75 cents (10% retail tax).
Math and methodology are at https://newrevenue.org/2017/07/02/nevadas-70-cent-per-gram-tax-on-marijuana-flower/.
Alaska statute says $50 per ounce.
California statute says $9.25 per ounce.
CO data is from from https://www.colorado.gov/pacific/sites/default/files/AverageMarketRate.pdf; NV data is from , up from 70 cents: https://newrevenue.org/2017/07/02/nevadas-70-cent-per-gram-tax-on-marijuana-flower/.