For the quite high price is also likely a degree of gradation for the water type to be available - at us a lot of tea is drunk and it would be nice if you could for example prepare the green tea perfectly..
This is perhaps only in my model the case, but the cover, which should be open with slight pressure, clamped temporarily - but sometimes it also opens all by itself. Optimal is for me something else and I recommend this device the most fashion-conscious aesthetes who want to enjoy the very original petrol tone of the device and attach no importance to the technical bells and whistles. For his "normal" duties he fulfilled quite reliable and good - if you even with children in the household a little should be careful - so hot-looking part heats up the water boil neatly on!