500 shares = $2.50 one way 3000 shares = 15 one way. 1000 shares = $5.00 one way. So easy a cave man could do it.
It appears they are great if you are trading small sizes in expensive stocks. If you are trading big sizes in cheaper stocks, forget about it. Am I correct that it is .25 cents to cancel an order? So if you use OCO to manage trades, add another buckish to each trip.