In a related situation: some years ago my dad went to Hong Kong and brought back three fake Rolex watches as gag gifts (with the exchange rate I think he said he paid about $20 total). Until he convinced them the watches were fake (pretty easy to do) Customs wanted him to pay duty on their value as if they were authentic. I am not sure how he convinced them not to confiscate them (one is allowed to bring in limited quantities of counterfeit goods but three is more than one and obviously not for personal use). Somewhere I have a photo of my brother, Dad and me all checking the time on our new watches....