This metric is a way of summarizing the conversion rate, average ticket price, and commission percentage. It does not take into account the click rate that an offer will receive. So while EPC is certainly a useful stat to consider when evaluating potential affiliate offers, it must be considered alongside the click rate an offer will receive. A great EPC combined with a bad click rate won’t translate to great earnings. (In other words, the highest EPC isn’t necessarily the best offer.)
The concept of affiliate marketing on the Internet was conceived of, put into practice and patented by William J. Tobin, the founder of PC Flowers & Gifts. Launched on the Prodigy Network in 1989, PC Flowers & Gifts remained on the service until 1996. By 1993, PC Flowers & Gifts generated sales in excess of $6 million per year on the Prodigy service. In 1998, PC Flowers and Gifts developed the business model of paying a commission on sales to the Prodigy Network.