東京の英会話サークルならTEG英会話クラブ:  ビジネス?

Is Tokyo English Gateway a club or a business?

I have wondered about this after visiting a couple of times over the last several years. Back in the day, I lived in Chuo Ward, and so my residence tax money supported the Community Kyobashi Civic Hall (kuminkan). Coincidentally, I had also worked in Eikaiwa at the time, and so if this “club” was a business, it directly competed with other “free chat” businesses in the locality.

From the website and its FAQ, we can pick out certain items:

その都度ことなりますが、毎回100名近くの方が参加されます。国内最大規模の英会話サークルです。

The number of participants varies, but it is about 100.

参加費は500円です。 入会金は一切かかりません。
*英語が母国語(ネイティブ)の方は無料になります。

It costs the non-native speaker (Japanese) 500 yen, but the native speaker has no charge (and conversely, receives no pay).

It is mostly all non-native speakers there. Very few foreigners (5 at most? Usually 1 or 2.)

So the revenue for one two-hour night would be 50,000 yen.

Rent for two hours at the kuminkan can run about 10,000 yen.   (Less if you use just part of the large hall.)

Where does the other 40,000 yen go?

And if attendance is only 40 non-native members (20,000 yen), where does the other 10,000 yen go?

Where does it go?