History of tobacco minimum purchase age by U.S. jurisdiction Wikipedia Missouri Vapers Are Unlikely To Pay More Sales Tax And It's Costing The State Millions KCUR Kansas City news and NPR how old do you have to be to vape Definitive Guide To Discourage Vaping Among Youth, Missouri Gov. Parson Mandates Education Campaign STLPR A mom says her 17 year old had no problem buying vapes from an area shop and has the credit card charges to prove it. After she and her son agreed to speak with us, we launched our own investigation.