I did not find any other post informing about this so here we go:

Yes, this is real.

You can get the Steam Link for 1$ (excluding shipping costs) until 21st of October - tomorrow! It's part of a bundle which includes the game ICEY. If you're not interested in the game you should even be able to refund it!

I don't know if it's worldwide or limited to some countries. Check for yourself:
http://store.steampowered.com/bundle/5025/ICEY__Steam_Link_Bundle/

Please share so everyone gets a chance to make use of this offer!