Walmart offers the Monster SoundStage S1 Mini Wireless Speaker for $50. Choose in-store pickup to drop it to $49. That's $37 under our February mention and the lowest price we've seen. (It's the best deal now by $11.) It features both WiFi and Bluetooth connectivity.
Nordstrom Rack offers the Vivitar Bluetooth DJ Headphones in Blue, Red, or White for $12 plus $7.95 for shipping. That's $18 off list and the lowest price we could find. These headphones are rechargeable.