"Madame, everyone from duchesses to barmaids shops here," said Mme. Mony, the proprietor of Marché Saint Pierre, a Paris home fabrics institution since the 1930s. And indeed, the range of fabrics and prices is wide enough to encompass both stations of life—and all the stops in between. In addition, getting here—the depths of the 18th arrondissement—is an adventure. 2 Rue Charles Nodier; 33-1-46-06-92-25.