Since PACT Act enforcement, banks read vape files as a shipping-and-verification question: who checked the buyer's age, and who signed at the door. With a real age-verification vendor on checkout and adult-signature delivery, you're a placeable retailer — not a liability.
Retail smoke shops price ~2.8–3.4% card-present. Online vape runs ~3.5–4.5% and needs the full verification stack.
Age-verification vendor agreement (AgeChecker, Veratad, etc.), PACT-compliant shipping method, and state tax registrations where you sell.
Stripe and Square prohibit vape outright; mainstream shippers dropped it too. The processors left standing specialize — that's us.