The amount of time it takes for our US kettle to reach temperature is ridiculous. My wife and I have a kettle that I only really use when I make us a pot of tea. It takes about 5 minutes to bring a liter of water to a boil and it doesn't get much better with less water. If I'm just making one cup, I'm just gonna put it in the microwave.
I've seriously considered getting a 220V outlet installed just for a proper kettle. We like our hot beverages, so I kinda think it would be worth it.
Not sure how it can be too much money, it's literally free to use. There are ads, but there aren't many and not obtrusive at all. I haven't really noticed them. I'll probably buy the pro version just to throw some money at the developer. Otherwise, I wouldn't mind just using the free version.