-I found that when someone has shipped to me via EMS, it sails through, no Customs charge (bags other than bIrkin, have no experience with that).
But, as others have said, if it is FedEx for example, you will get hit. I just bought a pre-owned Marc Jacobs for 850 USD, the seler marked the bag on the p/w as 500, I just got a bill from FedEx for 70, which means customs valued the bag at more than 500 with a duty charge of 9%. They valued it for about what I paid for it! Howdeydodat???? LOL They must have someone sitting around figuring out resale values ???? The box was not opened by appearances(though I have had labels slapped on boxes indicating they had been xrayed, near as I could tell as to what the label meant), and the shipping from Dubai to US took about 3 days. so it didn't linger long in Customs
So in the end I honestly don't know if they charged 9% or something else, as the box wasn't opened but the $ did not correspond to 9% of 500$
Sorry to be long-winded
FEDEX paid CBP 9% on your behalf. FEDEX also charges a fee for "handling/clearing packages" through customs. That's why it was $70 not 9%.