費用大分いくらですか？→費用はだいたいいくらですか？

I think you'll need at least 1,000,000 Japanese Yen per year for tuition if you're going to study at a private college/university, but usually school fee varies depending on your major. Probably you could have chance to get a scholarship for foreign students (which normally covers around 30% of your tuition. There also are several different kinds of scholarships for foreign students in Japan, provided by each college/school or by the Ministry of Education). Technical/training schools (=senmon gakkou/専門学校) might cost even more. Tuition of public/national colleges is normally much lower than that of private colleges. Plus you'll need to pay for your accommodation (apartment or maybe dormitory, etc.) and living costs, which might vary depending on which part/area (like whether you're staying in an urban area like Tokyo or Osaka, or in a rural area like Shiga or Miyagi...) you're going to live. In Kyoto, I think a small apartment room for students might cost around 5~70,000 Yen per month (so many foreign students share a room with 1~2 people).