For example ABC payday loan Lead $30 which allows cash incentive and You decide to pay $10 cash back to customers. And you state in your site "$10 cash back,provided customers present you the proof of purchase". I have never this before even if cash back is allowed and wondering HOW EFFECTIVE IT IS. Could someone post your experience? Statement of cash back offer in your website sells 2 times more or 3 times more than your promotion without cash back statement? OR The same or Negligible sales increase?