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Join Date: Sep 2009
Location: Minneapolis: DL DM charter 2.3MM
Programs: A3*Gold, SPG Plat, HyattDiamond, MarriottPP, LHW exAccess, ICI, Raffles Amb, NW PE MM, TWA Gold MM
Posts: 100,421
IIRC items that you buy in USA duty free stores are not considered to have been acquired abroad and thus are not subject to the standard duty free allowance, at least in terms of the dollar value exemption.