B&H Photo Video offers the Google Chromecast Audio Media Player for $15 with free shipping. (Google via eBay charges the same price.) That's tied with our mention from two weeks ago the best deal we could find now by $5. (It's also within a buck of the lowest price we've ever seen.) It features dual-band 802.11ac wireless and compatibility with Android and iOS devices.
With these companies, it might be easier than you think to negotiate your monthly bill down.