Educational video (promo)

Video to demonstrate my approach to the work of students video.
We take on a green background, on the installation we put the office background, clean, cleanse the accuracy on the clots of different images.

I can't show the video lesson because of copyrights on the customer's content.

One real lesson lasts 90 minutes.
The price for production of one roll is 3000g.
If we make a few rolls a day, it's cheaper by 2500gn / lesson.
With regard to equipment, recording, installation.