yea, the guy who said "one side or the other" is badly misinformed, but lets try to stay on topic. when using NYSE, the scalper can get filled on both sides without being crossed, meaning he can make net profit and $1/1000 rebate, correct? other networks=better rebates but worse fills, meaning netting a profit would necessitate holding position against you for it to come back, correct? just want to make sure im understanding.. thanks