I have read on a site that "If you make multi-legged options trades frequently, you should check out the brokerage firm OptionsHouse.com where they charge a flat fee of $14.95 per trade, regardless of the number of contracts, for up to 4 legs." I am currently using interactive brokers and I am paying thousand in commissions each month. Anyone trading thousands of contracts using Optionshouse.com? Do you really pay just $14.95? Their website seems to advertise $0.15 per contract.