Got the Anker Uspeed USB 3.0 9-Port Hub + 5V 2.1A Charging Port with 12V 5A Power Adapter from Amazon for US$59.99 (S$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.
