Hi. I don't know which St. Gervais you are moving to since there are at least a half dozen on my map. However, try Ikea Stores. They are all over France and have just the sort of things you are trying to find. The prices are reasonable and there is an Ikea Store in every major city in France.

You can find one near you at this web site: http://www.ikea.com/fr/fr/