After careful searching for the cheapest option, calling and walking to several local clinics, I found out the following. X-ray of one unfortunate tooth just to see how exactly broken will cost me - attention - 280 euros!

In Switzerland, dentists never ask patients to open their mouths. It does not need. They just tell him the price"

YYY: For this price of 1 X-ray, I am ready to speed up the electrons with my hands.