Home: About Us / Payment

Payment Methods

Thank you for using our services. Please use one of the following two methods to make your payment.

Payment Method 1:  Paypal

Please click the following button to make your payment.



Payment is easy and secure. You can pay quickly and conveniently by credit card via PayPal. PayPal accepts all major credit cards.

* You do not have to be a PayPal member to use it.

Payment Method 2:  Checks (U.S. Customers Only)

Make checks payable to Excel Business Solutions Int'l Corp. Mailing address available upon request.

Quick Contact Box

Black-Scholes Option Pricing Model

The Black-Scholes model is a mathematical model of the market for an equity, in which the equity's price is a stochastic process. Its PDE is an equation which (in the model) the price of a derivative on the equity must satisfy. The Black–Scholes formula is the result obtained by applying the Black-Scholes PDE to European put and call options. The formula was derived by Fischer Black and Myron Scholes and published in 1973. They built on earlier research by Edward O. Thorp, Paul Samuelson, and Robert C. Merton. The fundamental insight of Black and Scholes is that the option is implicitly priced if the stock is traded.
More Info