This will be one hot selling product on Apple Store. With the phasing out of 30-pin connector from Apple, this tiny adapter is a better investment than the 30-pin to lightning port connector. Look at the form factor. Super small.
If you look again, most of the smartphones are using Micro USB connection. That means that the chances of you getting help to charge your iPhone/iPad/iPad mini will be higher. And the cost is much cheaper (S$28) than the 30-pin to lightning port connector (S$42).