Motorola T305 Hands-free Visor Mount Bluetooth Speaker with Car Kit for $10.00. Shipping is free on orders over $50. If needed, use this Filler Tool to pad the order to qualify for free shipping. Otherwise, shipping is $7.95 for a total of $17.95 shipped. Here is a screenshot for your reference. It features up to 14 hours of talk time, up to 200 hours of standby time. Note that it comes in OEM packaging, which means no pretty retail box but is otherwise identical. Most places have it for about $29.
This deal has expired as it is now out of stock. Congratulations to those able to get in on it.