I'd love to know where you're picking up quotes on options that allow those kind of margins. Where are you looking that I'm not? How are you trading with nil premiums / discounts?? If you're trading with premiums, then the numbers you're quoting are gross profit. What are you netting?? On my calcs and on the options pricings I'm seeing, you're losing money on those trades.
Have to say that unless you can be a lot more specific, I have to agree with a previous poster that you're full of it!