One-to-one charges are not fixed, and the charging standards of different institutions are different. In addition, the frequency of classes is also a factor that affects the one-to-one cost. If the frequency of classes is relatively high, the tuition fee will definitely be more expensive. There are also teachers, platform strength and so on. Generally, online one-on-one education like 100 education is around 200. The one you asked seems very expensive. After all, advertising costs money. But overall, online is still more cost-effective than offline.