Update (10/16 7:50am): Groupon has official Google refurbished Chromecasts for $25 shipped again right now.
Amazon offers the Google Chromecast HDMI media streaming dongle for $28 with free shipping for Prime members and orders of $35 or more. Staples matches this price but you may be able to save more if you’re willing to trek out to your local store. Take advantage of this ‘EcoEasy bag’ promotion to save an additional 20%, which will net you a Chromecast for just $22.40. Ordering from Amazon or buying at Staples will also get you 2 free months of Hulu Plus ($16 value) as well as 3 free months of unlimited music from Google Play ($20 value since you can always get a free month).
The Chromecast wirelessly beams movies, music, web content and more from Android, iOS, Mac and PC devices to any HDTV via a WiFi connection. It supports Google Play, YouTube, Netflix, and Plex, Vevo and several other apps.