iPad Mini Redux

Ben Brooks:

Right now Apple sells and markets devices by showing users why they need/want such a device. The amazing screen on the retina MacBook Pro. The amazing form factor of the MacBook Air. The intimate web and portability of the iPad. The amazing do everything, go everywhere iPhone. 10,000 songs in your pocket iPod.

How does Apple market a seven inch iPad if they are only making it because it would be cheaper to buy? What is demonstrably better about a 7 inch tablet?