Mywit via eBay offers the refurbished LG Tone Pro Wireless Bluetooth Headphones
in White or Black, model no. HBS-760, for $19.99
with free shipping
. That's the lowest total price we could find for a refurb by $9. They feature call and play/pause controls, jog buttons, quad-layer speaker technology, and built-in microphone.
Of note, no warranty information is provided.