Many people are uneasy about offering lump-sum cash payments. A solution is to provide in-kind rewards – such as a down payment on a house, a contribution to a retirement fund, or lifetime health insurance – so that the program would not be attractive to people who might otherwise rush to donate on the promise of a large sum of instant cash.
许多人都为提供一次性的现金偿付感到担心。解决方法之一是提供实物回报，例如一栋房子的首付，捐给退休基金的一笔款子，或是终生的健康保险，以便这个项目不会吸引这样一批人：为了马上收到一大笔现金的承诺，他们就会冲过去捐肾。