Customs would seize either if discovered to be what they are. Unlikely any further repercussions although theoretically they could make a stink over the DVD's. Much more so if it was 50 of the same title than if it was 50 different titles. If it was in your bag and you had put on your customs forms you had $20 worth of stuff and the DVD's are your personal movies to watch on trip..... well if you didn't get secondaried, you didn't make a false statement did you..... and if you did get secondaried, about the worst that could happen is you lose your stuff. That's just my opinion not advice.