OptionsHouse is probably the cheapest you're going to find. $5 for five contracts and each additional contract is $1, or $8.50 flat rate plus .15 a contract. You can switch back and forth every 24 hours. I think the quality of Optionshouse is a bit lacking though...
Register for free to join our community of investors and share your ideas. You will also get access to streaming quotes, interactive charts, trades, portfolio, live options flow and more tools.