If it's from the right seller, then yes. There are a lot of knock off beats out there in the world, my brother bought the Lady Gaga Heartbeats from a third party seller on Amazon and we knew instantly they were fake because we already had a pair that we got from her.
However, I have to say I am not a fan of Beats. They are over priced for the sound quality you get, they really did bring more people into the world of headphone quality and what happens when you spend money on a good pair of headphones, but for that same amount you could have gotten a really great pair. Like I got the JBL S700 which is really REALLY good quality and I would say get that over Beat's Solo which is their entry level to their better headphones.
The JBL S700 is on sale on Amazon for $132 and I paid $250 for mine and that's when mine was on sale.
Best Buy also has the V-MODA Crossfade M-80 on sale for $79 when the retail for $229. I heard these were really good as well, and I would buy either of these two before I go with Beats.