Found 22nd Jun 2017
Now back in stock for delivery guys.
Setup is easy. Just connect your Steam Link to your TV and home network, where it will automatically discover any computer running Steam. All that’s left to do is grab your favorite controller, kick back, and enjoy your collection of games from the comfort of your couch.
Steam Link is designed to take advantage of the horsepower you already have in your home, streaming from your current gaming computer by mirroring its experience to your TV. Video and audio data is sent from your computer to the Steam Link, while your controller input is sent back in real time. Virtually every game that your computer runs can be played on your TV using Steam Link.
They now seem to have dropped the in-store price to £11.99. It was showing £39.99 yesterday.