Abstract: A method for trading a financial instrument includes displaying a dynamic price scale containing a plurality of prices corresponding to orders for a financial instrument dynamically shifting the prices in the price scale when the inside market changes, displaying a plurality of buy order entry cells aligned with prices in the dynamic price scale and a plurality of sell order entry cells aligned with prices in the dynamic price scale, displaying a static inside market window around prices associated with the inside market, wherein the static inside market window does not move in response to a change in the inside market, and enabling a user to enter a buy or sell order by selecting one of the plurality of buy order entry cells or one of the plurality of sell order entry cells.