All too often people look at marketing ROI in terms of response rate: in other words, “I sent out 10,000 pieces of direct mail and only got 39 responses which is terrible.” This is wrong think.When it comes to marketing ROI, you have to realize that the term means Return On Investment and the return is measured in dollars (or your local currency). Let’s say you spend $2,000 to get out a bulk mailing of 5,000 pieces and you get 10 calls as a result. Doesn’t look like much. But of these 10 calls y.