At what stage of development will it be possible to talk about the cost of training?

As soon as one of the universities starts working on the platform.

Each course may have a different price. The entrant will be able to choose the available option.

Here you are absolutely right. I think the main thing is that the price was cheaper than in the university, then the popularity will be big

The absence of fees for moving and living in another country will necessarily reduce the cost of tuition.

What costs will be spent on the equipment for working with the platform at the entrants?

No one spoke about the cost of the case-keys for each pupil. It should be inexpensive equipment.