Thanks bro. This an email excerpt from another broker of someone I know that asked his broker USAA, & they said: "While there isn't a quoted bid and ask, there still is sort of a bid and ask. If someone is bidding .50, highest bid still gets the trade, so no undercutting for .01's. Same with the ask, you cant really spam the ask with a really high priced trade when there is a lower ask. Matched trades execute, (quantity and price). limit orders only."