I think, this is a very Japanese way of paying lesson fees, and I don't know if this idea helps you in other countries at all.

I also don't think that it is the most convenient. Obviously getting monthly fees transferred to a bank account is much more simple and avoids problems.

However, here it either costs a bit of extra charge to transfer every month, AND for a cheaper charge I'd need a 200 students to open up an account for transfer.
So, not for me.

Well, and if you look at this picture, I am sure many of you will say:  
"Wow how pretty, I want this, too."

These are the envelopes where parents put the lesson fee in.

I write the sum into the field of the coming month, the kids take it home at the end of each month, parents put in the money and the kids bring it to me in the first lesson of the month.
I sign it and keep it till the end of month again.

I just ordered these:

And the picture below is a little gesture that makes my day, every time I order something here:

This time they added this cute little mini envelope with a handwritten message:  "Thank you always for your order.  It will still be cold for a while so please take good care of yourself."

I think no only what I do matters,  but who is connected to my work, even when that work has nothing directly to do with the kids, their parents and is as far away as a company on the net selling envelopes!