About a week ago there were 10 or 15 on ebay, all gone now. I went back looking for one for my GT as well, love it with my ES. There was a trainwreck (pre Dr.) online friday but haven't checked today. Airbrakes show up on ebay fairly regular. They don't seem to work as well with the big watt amps (my sounds like mud with my 100 amps but is perfect with the ES) People try a few times and the end up on ebay.
Without music, life would be a mistake” ― Friedrich Nietzsche