Today only Amazon.com are selling Final Fantasy Fables: Chocobo Tales for $19.99, reduced from $29.99 with free shipping if you add another $5.01 to your cart

I don’t know too many details of FFF:CT for the DS, although it does seem to be mainly a collection of mini games + some card battling which can be played over Nintendo Wi-Fi. It seems to be mostly aimed at kids but is great for adults also.