From a retail point of view, you will probably get more models (CD's) sold if you cut the volume in half and charge $19.99. In this Economy, $40 bucks seems high for anything you can't eat, or put into your car. I would offer 4 or 5 variety packs, and stick with that. otherwise you will go nuts trying to accomodate every little request. Mini-discs are a great idea, but some drives have trouble reading them, albeit, mostly older ones.
