Why is Lushan international tuition so expensive?

Including tuition and living expenses. According to official website of Lushan International School, as of July 23, 2023, the school tuition fee was 15800 yuan per person per year, including tuition, life management service fees, meals and miscellaneous fees, so it was expensive. The school is located in the second section of Lushan Avenue, Tianfu New District, Chengdu, Sichuan Province.