Cant say about the dry ports, but in Karachi - these goons are corrupt to the core and they are not low key officers, they are appraisers who appraise items. e.g. Ive had another problem with them. My brother bought some new service parts for VW at a closeout in London, they were dirt cheap, I mean he picked up a headgasket for 8 pounds, brake pads for 5, brake shoes for 10, the coolant tank for 10 pounds etc, packed all and sent it to me and having experience of these stupidites etc. he put in the original reciepts too. The Customs officers said that we would appraise these on original part prices as its impossible these items can be so cheap. Even with proof they will argue.
That was literally the last item that I had sent that way. After that Ive got entire ECUs wiring harnesses, repair parts via travellers or courier companies.