We actually provide this for mandarin as part of my business (http://popupchinese.com). And if you're looking for a data point, we charge $25 for three 20 minute sessions a week. The workload ends up being about as intense as taking a regular night course, except that it is one-on-one with a teacher.
Textbooks and traditional classrooms are way back on the curve. They prioritize the organizational problems of schools instead of the learning needs of students.
I was living in Buenos Aires at the time, and Googled around various language schools. I paid about $15/hour for a three-hour daily session. The fact that it was costing me a significant sum of money motivated me to work harder.
Textbooks and traditional classrooms are way back on the curve. They prioritize the organizational problems of schools instead of the learning needs of students.