good bad pen tip

So,
have gained me the pen for my iPad 3 when taking notes in lectures or to make comments.
I had only a cheap pen, but this had a very broad peak. Then I tested by a fellow student the Wacom pen and was thrilled.
Although very expensive, but has a much better writing experience. Despite the very high price so I have to put my pen.
After initial enthusiasm, I'm just disappointed, if not more. After less than 2 weeks, the tip of the pen is broken. And these must be bought expensive, since it is not directly available at Wacom. Find it an insult that the tip just so has low durability. And with the price replacement tip would simply entails.