Beware of the razrwires!!! Make sure there is a clause in your listing about the headset. I sold over 20 of these to build up some capital and did pretty good.
However, I had 5 broken headsets that had to be replaced. They are very very easy to break by putting them on and removing them from the frame of the sunglasses with too much force. It was a major hassle and caused me to stop selling the item altogether.