“…Economic research has focused almost exclusively on the macro-economic issues of credit cards such as the role of credit cards in influencing the demand for money in the aggregate sense [Batra, 1975;Dauten, Apilado, and Warner, 1973;Hosek and Zahn, 1974;Marcus, 1960;and White, 19761. At the micro-level, previous economic research has followed two main courses. First, the micro-economic aspects of credit card markets have been sparingly analysed.…”