When do you pay the customs? We am receiving packages from Europe - every 2 weeks. And 2 weeks ago received our 1st package from China. All packages come to JFK(company is NYC based), and than got delivered to our office. We never paid customs yet. I was told that either they won't deliver the shipment before you pay the customs, or will send the invoice later. The packages from Europe are pretty small, but from China we received heavy shipment, 100kg. It for sure should attract attention. But still nothing. We just don't want to get in troubles later. Any experiences how it all works?