it depends how the order is sent, EDGEX for example with the RDOT is 0.000275 to add liquidity or remove from NYB, and routes out for 0.0026, thats the best rate you can get I think, if you have access use EDGEX RDOT, ISI from Merryl Lynch charges I think 0.0007 both ways on NYB, and to route out is 0.003 plus 0.0007 I think. Im not sure who sends it but with some firms NYSE charges 0.0005 to add or remove, 0.003 to route. Plus no matter what on ETS any order over 5000 shares on NYB adding or removing has a billable fee of a 0.01 which is ridiculous. The SEC fee to sell should be around $30.7 per million dollars