For a limited time, you can save $15 if you buy 2 Google Chromcasts from Best Buy. That's 2 Chromecasts for just $55, making them basically just $22.50 each!
Looks like this an online deal only, so head over to Best Buy's website, add a Chromecast in your cart, change the quantity to "2," and enjoy the savings. You'll even get free shipping. What are you waiting for?!
Source: Android Police