Americans make recurring payments in several ways, but plastic tops the list. Scheduling payments -- set it and forget it, so to speak -- are easily charged to a credit card and then tapped per arrangement at regular periods. When you look at exactly how subscribers pay for subscriptions, the dominance of credit becomes clear:

(Source: Vantiv Now Worldpay; Socratic Technologies, via Statista) The exact percentage varies by product category. 62% of gift box subscribers say they turn to plastic...