Startup Idea : Duty free ecommerce

Hi, I've been thinking for sometime about creating an ecommerce platform using Duty free shops to sell imported goods. All countries slap an import duty on imported goods. In case of tobacco and liquor it is more than 50% and in cases of electronics it's in the range of 10-15%. All this money can be saved if one provides an electronic portal where people can order goods and pick it up from a duty free store at their destination. Let me know what you guys think.