Well i have a pair that i got as a gift a while ago .
Let me just say that they are amazing AF, but that doesn't necessarily mean they are worth paying over 100 bucks for.
If you're not comfortable you can always buy the beats made by Ludacris which are cheaper, but uglier.
Beats by Dre are nice overall , they play the music perfectly , and when you have them on the material for the ear pieces feel nice , not to mention how great it looks, has great durability, and unlike traditional headphones , you can choose to plug your phone or whatever into either side , there's no 'correct side' or a 'left' and 'right'.
But other than that they're just like anyother pair of head phones , i think they're so expensive because they look good aswell as being made by someone famous . You could either buy em now or wait a couple years until the price drops :c, or buy a regular pair , the regular pair will still get the job done.