Sears offers the iLive Wireless Bluetooth Receiver and Adapter, model no. IAB13B, for $21.99. Plus, Save Your Way Rewards members will get about $15 in SYWR credit. Opt for in-store pickup to avoid the $5.99 shipping charge. Assuming you'll use the credit, that's the lowest price we could find by $5. It features support for Bluetooth 3.0 and a wireless range of 33 feet.
Of note, Shop Your Way Rewards members may be eligible for additional credits and discounts.