Usa-Places.com has listed approx 6 Duty free stores in Calais. Some of the Top rated Duty free stores in Calais are- Duty Free Americas, Duty Free Americas - Calais- International Ave. Crossing, Duty Free Americas - Calais: Ferry Point Crossing, Duty Free Americas, Duty Free Americas - Calais: Ferry Point Crossing & Duty Free Americas - Calais Best Stop.