Dont buy them! Gone through 2 pairs in about 8 months, one pair snapped taking them off, and the replacements just gave up while i was mixing the other day, snapped in the same place. And thats studio use aswel, they've only been out about 3 times!
There's a lot fake HDJ 1000s about, seen some recently on ebay that were too cheap to be genuine. Im not suggesting anyone above has been done over, just a warning to anyone who may be tempted by a 'bargain'.
Here's a link which explains how to tell the real ones from the fakes