Thierry Mugler Alien is expensive because..

For sometime, my favorite fragrance is Thierry Mugler ALIEN =)) I am sure everybody will remember ANGEL which has been created by Thierry Mugler earlier. It was really sweet for me but I think Alien is different.

What is so special about ALIEN? The answer is it lasts forever and ever. 

I want to buy this perfume so badly however, it is really pricy. I went to a department store and asked for the reason. They explained, Alien is really long lasting because it has a very high ratio of scent in compare to the others. According to the salesman, Thierr Mugler ALIEN has around 14% perfume scent while Channel has just around 10%. 

So, I am back to my starting point, I still want it so bad =((