Ace Electronix via Amazon offers the Carbon Audio Zooka Wireless Bluetooth Speaker in Dark Grey, model no. ZUS-2, for $18.89. (They also have it in Navy for a few cents more.) Plus, Prime members bag free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, it adds $5.85.) Although we saw it for $5 less in June, that's the lowest total price we could find now by at least a buck. (Some stores are charging around $30.) This speaker grips your iPad or laptop and features two 30mm speaker drivers, a 30-foot range, and frequency response of 150Hz to 20KHz.