The corn market continues on an upward trajectory, but TF Agroeconômica warns that the graphical appreciation may be illusory if the producer does not compare the offered prices with their own production cost. According to the consultancy, those who use only the variable cost work with R$ 39.96 per sack and obtain a profit close to 32.63%. Those who adopt the total cost calculated by Deral of Paraná, of R$ 73.55 per sack, see a loss of about 27.94%. According to TF, each producer should consider the criterion that best represents their reality.