Sunvalley Brands via amazon.com has TaoTronics Bluetooth Transmitter and Receiver, Digital Optical TOSLINK and 3.5mm Wireless Audio Adapter for TV/Home Stereo System – aptX Low Latency (Certified Refurbished) on sale for $29.99 – $16 off w/ promotional code SDVK6G3P = $13.99. Shipping is free.
Original Price $49.99. Link for reference: https://www.amazon.com/dp/B01KO1JNCA