Sunvalley Brands via Amazon offers the TaoTronics Super Loud Bluetooth Speaker in Black for $49.99. Coupon code "WY4HNCNQ" drops it to $35.99. With free shipping, that's the lowest price we could find by $24. It features up to 15 hours of playback, two 10-watt drivers, and a 5,200mAh rechargeable battery. Deal ends February 17.