My sister is learning Korean in a row, and the cost is OK. The teacher is very good at teaching. Unlike us, she will teach you some skills, and will also help you learn according to your learning and acceptance ability. Overall, she has made rapid progress and her sister is also efficient in learning.
Lianlian has customized personalized courses for students according to their different language learning needs, class hours and level needs, combined with their personalized personality, hobbies and career planning. It's good. You can go online to learn about them.
It's really hard to say how much it costs. Each training center charges different fees, and the fees are different according to your learning content and courses. You can consult several companies and compare them. Anyway, I know one company called Yilian is good, reasonable and cost-effective.