Sam's Club offers its members the Vizio SmartCast 45" 5.1-Channel WiFi Bluetooth Wireless Soundbar System
, model no. SB4551-D5, for $349
with free shipping
charges the same, although it won't ship for at least a month.) That's the lowest total price we could find by $149. The system features a 45" soundbar with 30Hz to 20kHz frequency response, 8" slim wireless subwoofer with 30Hz to 120kHz frequency response (it fits conveniently beneath or beside most sofas), two rear satellite speakers, Dolby Digital and DTS sound, Google Cast, 802.11n wireless, Bluetooth 4.1, HDMI, USB, and Ethernet. It's compatible with the Vizio SmartCast app, which turns your mobile device into a remote control and lets you stream audio from other media apps.
Note that Sam's Club adds an additional $34.90 for non-members, although you can purchase a 1-year membership for $45.