The Nintendo Switch will be released around the globe on March 3. It'll retail for $300 in the US and £280 in the UK. Australian pricing is yet to be announced, but retailers are listing the Switch for AU$470.
You'll find a couple of USB 2.0 ports on the front of the Switch dock, to keep your controllers charged or plug in a USB to Ethernet adapter. (The Switch has built-in 802.11ac Wi-Fi, but Ethernet is another option this way.)