Hector Rivera was interested in buying shares of ABC Computer Corp, which was currently trading at $50 per share. Analysts expected the share price to rise sharply in the next few months. Hector decided to buy a call option for $400, giving him the right to purchase 100 shares of ABC Computer for $60 per share at any time between his purchase and the option's expiration date. Three months later at the expiration date, ABC stock was trading at $73. Hector used his option and purchased 100 shares of ABC Computer. How much money could Hector have saved had he bought the shares three months earlier instead of the call option?