eBay has the Klipsch ProMedia 2.1 Bluetooth Speaker System (2016 Bluetooth model) for $100 with free shipping. Retail price: $180. Features wireless Bluetooth connectivity, subwoofer generates deep authoritative desk shaking lows, compatible with other devices via a headphone jack and mini plug input.
Amazon has the Aomais GO 30W Bluetooth Speaker (Black, Blue or Orange) for $70 - $37 off with coupon F5SD3299 at final checkout = $33 with free shipping. Comes with AOMAIS Go Bluetooth 4.2 speaker. Has good Amazon Reviews.
Microsoft Store has the Harman Kardon Invoke Voice-Activated Speaker with Cortana (Graphite or Pearl Silver) for $100 with free shipping. Retail price: $200. Features powerful 360° sound delivered from 3 woofers, 3 tweeters, and 2 passive radiators, play your favorite music with the sound of your voice, make and receive hands-free calls with Skype.
For its Prime members, Amazon has the Logitech Z337 Bold Sound Bluetooth 2.1 Speaker System for Computers, Smartphones and Tablets for $50 with free shipping. Retail price: $100. Set includes two satellite speakers and subwoofer.
Has good Amazon Reviews.
Walmart has the Samsung Soundbar System with Wireless Subwooferl HW(-KM36/ZA) for$119 with free shipping. Features 130-Watt system with 2.1 sound and built-in Bluetooth for streaming audio from mobile devices.
Amazon has the Proxelle Portable Waterproof Wireless Speaker (Green) for $25 - $8 off with coupon 67JJC5GA (Ends 4/14) = $17 with free shipping. Features IP67 rated water proofing, 33-foot range, Bluetooth 4.0, hands free calling, and a 10-hour playtime.
Has exceellent Amazon Reviews.