Table tennis training near our school is calculated on a monthly basis. Basically three hours a day, at least one month in 500 yuan. Of course, if you are very keen on table tennis, you should take part, because interest is the best teacher and progress will certainly be rapid. A coach should be experienced, but not necessarily too old, mainly because of his high skill, lack of airs and good temper. I have seen several table tennis coaches who are very violent, and learning like that affects their mood. One-on-one training must be expensive. Generally, there are about six people with a coach, so the opponent is just learning, and the level is similar. If you play directly with the coach, you will lose confidence.

I hope you can be satisfied with my answer!