Study finds fast-food delivery comes with an extreme markup

(KTLA) - The cost of convenience is adding up for millions of fast-food customers in the United States.Online food delivery has become a trillion — yes, trillion — dollar business. But with each order comes a slew of fees that can quickly take the cost of an otherwise quick, affordable meal and make it ... less quick and less affordable.According to Chowhound, delivery services often include fees that aren't immediately obvious. They can range from service fees to small order fees an