He drives conveniently by and gives her a lift to an urgent appointment. On the way there, he talks her into becoming the club's sponsor, ensuring easy financing. This proves to be the making of Denry's fortune.
He starts up the Five Towns Universal Thrift Club. Members deposit money little by little; once they have accumulated half the sum they need to purchase whatever it is they want, the club allows them to buy on credit, but only from stores associated with the club. Denry makes money by getting a discount from the vendors in return for access to his large customer base.