New York -- Apple Inc. operates the most successful retail stores by a significant margin, according to RetailSails, a retail and consumer goods consulting firm. Apple stores averaged $6,050 per sq. ft. in the past 12 months, double those of Tiffany & Co., which ranked second, generating sales of $3,017 per sq. ft.
Here is RetailSails list of the 10 retailers with the highest sales per square foot: