Quote from foible:
I'm using Cybertrader right now, through Questrade. There are some glitches with the software that are frustrating until you figure them all out and modify your trading strategy. I also get charged a $6/day/symbol fee which is acceptable for someone that makes a lot of trades in a given stock, but if you aren't moving at least 1,000 shares/day in each stock you trade, IB offers much better rates.
Remember that Cybertrader charges .006/share, but you will also pay gateway fees, SEC fees and other fees. If you are trading the volume that you have been trading, you may be paying .01/share plus all the rest.
And finally, don't forget to ask about data fees, software fees and anything else. If you are trading light volume and paying $200/mo in software fees, the per share reduction won't make up for it.
Luck.