Do you have examples of Spreadsheet Method Pricing Engines that I can download and use?

The articles below have attached examples of spreadsheet method pricing engines with their Excel files as downloads, and including the details to be entered in the setup windows when creating the pricing engine.
The first article shows a simple implementation as a pricing calculator engine and a pricing spreadsheet engine. 
The second article shows a more advanced spreadsheet method pricing engine with many options common to printing jobs.
The third article is an example of a spreadsheet method pricing engine that shows or hides option values based on the choices made when using the price engine.