HiDEF Lifestyle via Newegg offers its Definitive Technology Cube 3.1-Channel Portable Wireless Bluetooth Speaker in Silver for $99.99 with free shipping. That's the lowest total price we could find by $38 and the best price we've seen for this speaker. It features tri-polar technology, 5.25" woofer, and battery life up to 10 hours. Deal ends May 7.