Sam's Club offers its members the Vizio SmartCast 40" 5.1-Channel Wireless Sound Bar with Subwoofer for $249.88 plus $9.18 for shipping. (Non-members pay an extra $24.98.) That's the lowest price we could find by $40. It features a 35Hz to 20kHz system frequency response, 6.5" wireless subwoofer, Bluetooth 4.0, built-in Google Cast, compatibility with the Vizio SmartCast app, HDMI, and USB.