Thank you MACD. Options on equities are very simple. In most cases they are for 100 Shares and every month is based on the same symbol. In the USA, equity options are all American Style, and the delivery are shares of stock. (Yes, I know that cash settled indexes are different) Options on futures require research and understanding. Each future has its own multiplier. I.E Silver is for $5000/point, Gold is $100/Point, Crude is $1000/point, ES is $50/point etc. That means that a $1.00 call option on each has a different value as you have to multiply those times the size of the base future. In addition each month can have a different future that can trade at different value than the front month. I suggest the CME education is a great place to start.