Bluedio via Amazon offers the Bluedio US Wireless Bluetooth Satellite Speaker System with Microphone for $59.99. Coupon code "LAH4TWIW" cuts it to $29.99. With free shipping, that's the lowest price we could find by $38. It features a 2.1 sound track, 3D sound, passive radiator, and a frequency response of 50Hz to 20KHz.