I think this happens sometimes. Most of the cases people are lucky to received a battered box and sealed bags. Sometimes a really 'used' item will pop up. I think if the condition is simply used, Amazon won't let you return for free as they'll say it is listed as 'used'. (I had this happen once that minifigures are missing and the rep first asked if I was aware that the list was listed as used. But of course, I told him afterwards that parts are taken away and not all the pieces are in the set I received.) So, technically, if all the pieces are there in your T1, then you are receiving what you ordered - used. But if indeed there is a good number of pieces missing, it is right to ask for a return shipping label. Of course, if you push harder, Amazon will bend regardless............. then, it'll be an ethical argument to be moved to the ethical thread, I guess.