The Art Nouveau products created by the Nancy School were conceived of in relation to their market, a market conveniently provided by the branches of the Magasins Réunis department store in the Lorraine region, operated by Eugène Corbin. From 1894, the company opened three very different stores in Paris, designed and created by architects and craftsmen from Nancy with the intention of selling their work to a wider public. This article examines these buildings, as far as the limited sources and surviving structures allow, and by placing them within a wider context of architectural ideas in the capital, will suggest the extent of their influence upon contemporary architects. These buildings also allow us to see how the Nancy craftsmen placed their work in relation to its audience, both in the microcosm of the store building, and within the city: it is significant, for example, that Gallé refused to sell in these stores, and sent his work to a specialist shop near the Opéra to attract an international clientèle. That three stores were felt to be necessary was partly a consequence of their locations, each intended to appeal to a different market, a fact which may partly explain their distinctive designs. Finally, the paper will look briefly at related work in Paris by Henri Sauvage, particularly his workshops for Louis Majorelle, from the period of transition towards Art Deco, and perhaps in response to Corbin’s fateful change of taste after the First World War.