Can I just say the smart "case" for the mini 4 is literally the biggest ripoff I've ever seen of an Apple product. $100 for a front and back cover when similarly nice cases can be had for a fraction of that? Unbelievable that Apple even has the gall to call it a "case" when it's just a back cover and to charge that amount for it.
Well, at least they didn't call it a "cage."
By your definition, virtually all iPhone cases should not be called case then. Out of curiosity, I looked up the definition of "case" in Merriam-Webster online dictionary, and the definition did not mentioning about fully enclosing the contained object, so by that definition, it's OK for Apple to call its silicon back cover a case, ditto thousands of mobile phone case makers.
Finally, the price of the silicon back cover and the smart cover is higher than what you have to pay for comparing to the seemingly dime and dozen on Amazon and Ebay. However, I do wish some one else out there would make a combo that works as well as Apple for less than $10 or even better give them away for free, as that would be better than paying for things. For now, I haven't found any, so I reluctantly paid for Apple's combo. They work wonderfully, and I enjoyed them every time I used them: the combo of back cover and smart cover is slim, and yet protective enough, fits perfectly, and the back magnet is strong to hold the cover when folded back so that the cover doesn't flap around. But would it kill Apple to give them away for free? I know they make a great combo and no one else seem to be able to duplicate it, but $100 for perfection! Why does it have to cost so much?
What I also don't understand is that if Apple can charge $100 for the combo, why other case makers don't make a combo as good and charge less and make ton of profit? Everyone seems to agree that Apple combo is overpriced, which by definition means can be made to cost less and still be profitable.