FATTENING MARGINS Shop: Sugar Factory (Times Square, New York) Signature treat: Classic ice cream sandwich, $8.95 Shop: Bravissimo (Santiago, Chile) Signature treat: Dulce de leche sundae, $6 Shop: Glaces Glazed (Paris) Signature treat: Two scoops of “Bla

Austria’s Michael Tojner ran furniture stores, Viennese nightclubs and online gambling sites before he hit it huge selling tiny batteries. But his best business? Selling ice cream to tourists. No wonder—check out these prices!