You should definitely NOT! but Dr.Dre headphones. you're insane if you will give them so much money for Normal Good headphones
I bought AKG 518 DJ headphones for 42euros, they can almost live up to beats by dre. So I think you can get beyond Dr.Dre with like 80-100euro.
Beats by dre, you're paying for the label, it's a bit like Apple.
http://nl.akg.com/akg-producten/bran...eadphones.html