Bigdeals via eBay offers the open-box Motorola S11-HD Bluetooth Stereo Headphones, model no. 89587N, for $29.99 with free shipping. That's $19 under the cost of a new item and the lowest total price we could find. It features noise cancellation, a microphone, quick-charge battery, and HD sound. (This item does not include charger, but is compatible with most micro-chargers).

No warranty information is provided.