Expensive, seven or eight thousand, ten or twenty thousand. If you want to learn, I'll give you a suggestion. If it is for work or hobbies, I suggest you buy a tutorial, then buy a set of second-hand equipment and practice at home with the tutorial. Equipment is lower than school fees. Learn and equip, kill two birds with one stone. If you want to compete or improve your DJ level, I suggest you go to some well-known schools, such as Wang Yilong DJ Training School, and I will wait for you.