Use MeritLine coupon code MLCK112SNL1
MeritLine has this Omicron Tubus G-ViB3 Portable USB Speaker for $18.99. Use the coupon code and the price drops to $12.99. Shipping is free. The speaker features a frequency response of 200Hz to 20kHz, USB cable, and remote control. Coupon expires after 100 uses.