For the quality and overall performance of this particular fan, a price in the range of €60-70 would be the most reasonable.

It is attractive and has options for lighting and brightness, but the fan, even at speed 6, does not perform well enough, especially when it is very hot; a combination with a second floor fan or air conditioning is needed. I recommend fans with blades, the classic ones.

We have placed it above the bed and it does a very good job. For sleep, intensity 1 or 2 is enough. As an "action" area, I would say 7-8 square meters. For 15 square meters coverage, it should be high-ceilinged and work at a higher intensity.