Abstract: A computerized method for online trading of options is disclosed. The method includes the steps of providing an interface screen that shows market data and market data analysis useful to conduct a transaction and allows a user to input various transaction parameters, wherein the market data and market data analysis shown on the interface screen are continuously updated; dynamically receiving selected transaction parameters for an option from the user; calculating an option premium for the option based on the selected transaction parameters and the continuously updated market data; providing the dynamically calculated option premium to the user; receiving an on-line offer for purchasing the option from the user; and presenting the received offer to a seller of the option for acceptance or rejection.

Abstract: A computerized method for online trading of options is disclosed. The method includes the steps of providing an interface screen that shows market data and market data analysis useful to conduct a transaction and allows a user to input various transaction parameters, wherein the market data and market data analysis shown on the interface screen are continuously updated; dynamically receiving selected transaction parameters for an option from the user; calculating an option premium for the option based on the selected transaction parameters and the continuously updated market data; providing the dynamically calculated option premium to the user; receiving an on-line offer for purchasing the option from the user; and presenting the received offer to a seller of the option for acceptance or rejection.

Abstract: An apparatus and method is disclosed for the housing, removal, recharging, and replacing of electric vehicle batteries. The apparatus includes a modular battery carriage and a vehicular battery carriage compartment allowing replacement of electric vehicle batteries to suit the needs of the operator at the service station and an automated service station for the rapid replacement of discharged batteries in electric vehicles with replenished batteries.