纠结与这些模型是做不好的

网上有免费的option calculater, 比如CBOE的，价值有限，作了就知道了。推荐你看Jeff Augen的书，如果还没看过的话。他写过5-6本option drading的书，其中最有帮助的有两本：

The Volatility Edge in Options Trading: New Technical Strategies for Investing in Unstable Markets by Jeffrey Augen (Jan 27, 2008)

Day Trading Options: Profiting from Price Distortions in Very Brief Time Frames by Jeffrey Augen (Oct 12, 2009)