It suite for my kids
At first, I, as a parent, was worried because I didn't understand the image, but it seems to fit my son.
I went to a few real abacus classes, but they didn't seem to like group classes, so my son said, "Online is better!", so I
decided to join. Since it's a small group, they'll ask me frequently, and they'll show me an example on a PC, so they seem to be able to understand it well so far.
As a parent, I don't need to pick up and drop off, and I think that the unique advantage of online is that you can watch the class while doing something.