Best Buy via eBay offers the Lenovo Star Wars: Jedi Challenges AR Headset with Lightsaber Controller and Tracking Beacon for $49.99 with free shipping. That's tied with last month's mention as the best deal we've seen. (It's also the lowest price now by $22.) Use your iPhone or Android smartphone with this augmented reality headset to do lightsaber battles, holochess, or strategic combat.