More, faster, more reliable – the demands on logisticians increase with the steadily growing online trade and the ever-increasing expectations of customers regarding the speed and reliability of a delivery. A current study of Prof. Dr. Stefan Rock, Professor for Retail Management and Retail Logistics at THI Business School, shows that on the one hand, adverse purchasing policy – for example far too big order quantities to cut costs – can generate higher sales. On the other hand, the profit will be reduced due to extra costs, e.g. for storage or logistics. Sometimes, the extra costs even exceed the profit. Thus, Rock advises companies to include logistics in the planning processes during the value creation process. He summarized the results of his study and his resulting conclusions in a guest article in the latest edition of the Lebensmittelzeitung.