if you took the time to read the policy on IB's web site, you'd perhaps understand things better. The high tech system did not fail and the liquidation went according to procedure.
$4 in commission doesn't make a difference for a high volume trader, you're kidding me. I'll agree though the 1-10 cents is crucial and you'll get much better fills using an electronic broker.
you now claim you're a market maker in options but earlier you state that you place your orders via the phone via your full service broker. sure, sure you are.
I do both, did you know that there is MORE than one mrk mkr? I also give prices to brokers.
Also brokers get prices from other MM and in some cases i take the prems from other traders at the price i quoted because they[ traders] chose my price.