TCL Alto R1 Wireless 2.0 Channel Sound Bar for Roku TV’s $50 + Free Shipping
Amazon [amazon.com] has TCL Alto R1 Wireless 2.0 Channel Sound Bar for Roku TV’s for $49.99. Shipping is free
Note from product page: "Exclusively for Roku TV: Requires a Roku TV. Expandable with Roku Wireless Subwoofer. Does not work with Roku Wireless Speakers."