On the way back from vacation, I stopped by MIA (Miami International Airport) and snapped some pictures of their duty free prices. Biggest Savings Percentage 3. Knob Creek Bourbon Whiskey - 46.73% Duty Free Price: $29 USD LCBO 1L Equivalent Price: $62.60 CAD Savings Percent (CAD): 46.73% 2. Johnnie Walker Red Label - 48.16% Duty Free Price: $18 USD LCBO 1L Equivalent Price: ...