Local laws can shift demand overnight. A flavor ban, a new excise tax, or an age enforcement crackdown changes what customers can buy and how much they're willing to pay. Check your state and municipal rules. The CDC's state tobacco activities page is a good starting point for tracking regulatory trends.

Demographics matter too. Are you in a retirement community? Older vapers might prefer lower nicotine strengths. A younger crowd might lean toward higher-puff disposables. Match your inventory to the people who actually walk through your door.