From my experience (I have no data), it seems that many of them use the same source for coffee: http://www.cafesrichard.fr/services-chr-nos-produits-4.html http

From my experience (I have no data), it seems that many of them use the same source for coffee: http://www.cafesrichard.fr/services-chr-nos-produits-4.html http://www.cafesrichard.fr/services-chr-nos-produits-4.html (and this is rather cheap coffee)