There is no tuition for attending a state-run Studienkolleg, although there is usually a fee between 100 and 400 Euro per semester, depending on the Studienkolleg. You also need to pay for health insurance and will need to buy books and other class material. Life in Germany is expensive. You should plan approximately €700 per month for rent, clothes, food etc. Usually you are not allowed to work during the semester while you are attending the Studienkolleg. Students do not usually receive grants. You will need to plan to have enough to live on during your time in Germany.