Why oh why is there so many people interested in selling Dr Dre Headphones? If you are looking for cheap Dr Dre's then they will be fake. How cheap do you expect anyone to be able to sell them?
IKBentim is right, I got a 12 buck Bose like headphones off Ebay, that market is Way of saturated, look for the new thing coming and get ready, in fact someone should make a site on that, on future popular things that might come out,