I came across this website today and thought you might enjoy the virtual tour of the store. I read comments from readers on another site who had visited E. Dehillerin. Comments ranged from "a very dusty store with rude staff, to a dusty store with nice staff. After looking at the pictures of the store, it is no wonder it is dusty....how could you possibly keep up with the dusting in a place so crowded. I also read several comments about folks wanting the Silpat cooking mats with the imprinted name.
http://www.acanadianfoodie.com/2010/08/03/kitchen-bakeware-and-specialty-food-shopping-in-paris-e-dehillerin-g-detou-and-mora/