Perhaps because you had something repaired outside of your country , your customs are the ones that charged you , if you had them repaired under guarantee you may not have to pay . it would have got stuck in UK Customs because there is only one person who works there . If tariffs haven't affected you personally its probably because you are wealthy enough to not care about increasing prices . As far as I am aware tariffs have impacted the World economy but I am not an Economist so it could just be propaganda . In a world full of liars who knows.