Got the Anker Uspeed USB 3.0 9-Port Hub + 5V 2.1A Charging Port with 12V 5A Power Adapter from Amazon for USD$59.99 (SGD$75) excluding shipping.
Ignore the long product name, it is basically a 9-port USB 3.0 powered hub with an additional USB charging port. Technically you can use all the 9 ports for charging as well but they might not be enough current because each of the 9 port can output a maximum of 900mA. From the USB 3.0 specifications, 900mA is the maximum amount of current that can be output from a USB 3.0 port.
When a device is attached to a USB 3.0 port, a device will reserve about 500-600mA for data transfer (even when not in use) and leave the rest for charging (300-400mA) which may not be enough as the average device needs about 500mA to charge.
That is the reason why Anker included the additional 10th USB port which is solely use for charging, capable of 2.1A output which is enough to charge your iPad normally.
I am not too sure whether you can get Anker products in Singapore, but it seems that they do make great products. I hope someone do eventually bring them in. From Gizmodo’s Five Best USB Hubs, this product was voted the best USB hub.
In a related note, it is very difficult to get a USB 3.0 hub in Singapore! So far I only saw the Macally’s 4-port Portable USB 3.0 Hub selling at Epicentre for SGD$45. Even Challenger doesn’t carry any USB 3.0 hub!
Anker Uspeed USB 3.0 9-Port Hub – Box Top
Anker Uspeed USB 3.0 9-Port Hub – Box