Marvellous Marketplaces

From publisher blurb:

Players of all kinds often find themselves visiting random shops when they're in any sort of town, requiring quick work from the Game Master. Here, with the Marvellous Marketplaces cards, we present you with the option to cut down on your work, when your players go "off the rails".

Each of the cards present a unique store, complete with a short description, the special goods that the store sells (beyond those a GM would normally assign to the store), and a unique little piece of information about the store, it's owner or a potential plot hook for the player characters to explore.