On Cash Discounts to Retail Customers: Further Evidence
基于更精确的现金与信用卡销售成本差异及支付比例估算，研究发现零售商提供现金折扣通常无利可图。
In an earlier article, Ingene and Levy outlined the optimal discount that retailers should offer to induce cash rather than credit card payment. Here it is shown that, on the basis of more careful estimates of the cost differentials of cash and credit card sales, and more likely estimates of the proportions of cash and card payments, retailers generally will not find it profitable to offer cash discounts.