Today only, Google via eBay offers the Google Chromecast Audio Media Player for $15. Coupon code "PHLDAYTEN" drops it to $13.50. With free shipping, that's a buck under our mention from a few days ago and the best price we've ever seen. (Google charges $15 directly, as do most other stores.) It features dual-band 802.11ac wireless and compatibility with Android and iOS devices.