Samsung SmartThings offers preorders of its Samsung SmartThings Link for Nividia Shield for $14.99 plus $7 for shipping. That's the lowest price we could find by $18. This device turns Nvidia Shield streaming media players (sold separately) into a SmartThings hub, letting you control compatible home automation devices.

Note: It's also available bundled with select SmartThings devices starting at $34.99 with free shipping. It's expected to be released on October 22.