Adorama via Google Express offers the Polk Audio MagniFi MAX Sound Bar System in Black for $299 with free shipping. That's the best price we could find by $101, although most sellers are charging $499. It features a 3.1-channel sound bar and 8" wireless subwoofer. It works with Chromecast. Note: First-time Google Express customers can take 20% off via code "MARSAVE19".