That would explain their intended audience then. That would make something like the Zojirushi's more useful. I like the idea, and it would be great for large groups, I would have to put it under lock and key at my office for only a few to use at the present pricing. Even if I did find a deal I probably would only let a few touch it.
Yes it does heat to boiling. The cup of tea or hot chocolate I get I normally have to let sit or drink very carefully. For the $5 US I spent I have no complaints. I love them. They also make instant oatmeal quick and easy, as I keep those in the ready to make cups at the office for quick snacks and breakfasts at 0300. (I work at night.)
I don't drink coffee and with only 1 person in the house it works out great. Fill it up and get a nice cup of tea/hot chocolate.