My average size is ~4000, so we are talking about $10 vs $3. If you have 500 trades in a month, this is $3500 saving.
but are you using lowtrades.com right now? i'm debating between using lowtrades and genesis but i mean lowtrade's website is pretty bad... looks really cheap and also what is this level 2 market order fee? http://www.lowtrades.com/CommissionsAndFees/Commissions.html so every order i get charged $6?? I mean what type of trader doesn't use Level 2, or are you guys not daytraders, and more "investors"? Actually nevermind I guess you guys aren't daytraders right? Because 500 trades a month is pretty little.