I just bought it for 40 euros with a 5 euro warranty for replacement in case of damage for three years. I bought it for my bathroom, which is about 5 square meters and generally very cold. The logic is for it to work on the first scale at 800 watts and reach the bathroom at around 20 degrees Celsius. In half an hour, it managed to reach 20 degrees on the first scale at 1/4 of the thermostat. It is 8 degrees outside, so inside it must have been around 15 degrees. Now I have to see if it will stop and how long it will take to start again. As an air heater, its noise is normal. It makes a small noise, like something touching inside, but you have to put your ear close to hear it, so I guess it's nothing. Compared to the Kalko I had before, which had three halogen lamps that heat locally and each one is 600 watts, and you have to turn on all three to warm up, I consider this one to heat the space more evenly because it's an air heater and more economical because it's 800 watts. Of course, it also depends on each person's requirements and how many square meters they want to cover. I think it's worth it for its price and for the use I want it for. The cable is indeed somewhat short, but let's face it, how many meters of cable should they put for this device?