Read up on grey imports and they are not fake goods nor illegal - but controversial for sure. I didn't get too far as my eyes glazed over. Would have thought there would be some regulars familiar with the term and what it means .

As you have not stated in your description that the item came with manufacturers warranty - and the camera comes from an Australian suppliers and has a warranty - the type of which is not explicit nor misleading as far as i can see as it does have a warranty and with terms that state they match the conditions of the warranty of the manufacturer - then can't see his claim can have legs - given all the available info you have OP.