i doubt you will have any means of comeback through ebay, but stil,,,scrutinise the listing...
if it leads you to believe that you should be getting the full package,,then afterwards he said the iolok broke,,then you'll have grounds for refund,,,but
if it says,,,,protools mpowered with no ilok auth as it's broken.....then you've just made a mistake, and i'm sorry for ya.....
either way,,,play it cool and talk to the guy (don't go off at him) cos you never know,unlikely as it is,,,it could be a misunderstanding??
the whole ilok ownership/license transfer thing is funny anyway,,,,,i don't remember the details intimately, but i bought waves platinum second hand,,and after all the fees and weeks of hassle, it would have been cheaper to get buy new from waves!!!!