Groupon offers the factory-refurbished Google Chromecast Streaming Media Player, model no. H2G2-42, for $18. Apply coupon code "VISA5" and checkout via Visa Checkout to drop the price to $17.10. With $3.99 for shipping, that's $2 under our mention from two weeks ago and $8 less than you'd pay for a new one now. It attaches to your HDTV's HDMI port and connects to your wireless network to receive streaming online video, music, websites, and more from your smartphone, tablet, or laptop. A 90-day Google warranty applies.