http://wikitravel.org/en/United_Stat...rica#Sales_tax
There is no nation-wide sales tax (such as VAT or GST), the only exception being gasoline. As a result, state/local taxes (see below) on major purchases cannot be refunded by customs agents upon leaving the United States.
Tako da gledaj da nadjes radnju u nekoj od pomenutih drzava bez sales taxa.