We live in a world in which zero commission firms receive Payment for Order Flow (PFOF) and sell customer orders to market makers. Depending on your style of trading, this could mean worse fills or higher latency to the exchanges. After all, you get what you pay for.
We feel that PFOF should be a decision left up to the trader. We charge a flat commission of 5 mils ($0.0005) to cover our costs and allow our traders the option of routing their orders to a PFOF venue to collect a portion of the payment themselves.