Oh no! I guess you never read this: http://investorshub.advfn.com/boards/read_msg.aspx?message_id=96235081&txt2find=sharebuilder before opening an account with Sharebuilder. It is NOT for penny stocks. Etrade charges one commission - I think it is 9.99 when you first get started (I pay less because I am an active trader) - no extra for shares under a buck .