This article in the Wall Street Journal describes how consumers, including those in Argentina, evade custom duties:
"Online companies that hook up travelers willing to deliver items to shoppers abroad are building a new industry, but their users often participate in an age-old tradition: customs evasion.
"The companies aim to make it easier for people overseas to buy and receive U.S. goods like electronics by connecting them with visitors to their countries willing to haul the items in their bags."
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