Where can I find the excel format file?

The content provided does not mention any Excel format file. However, if you're looking for an Excel file to input your pricing data, you can create one yourself. Simply open Excel and create columns for units sold, historical price point, time period, marketing spend, and customer lifetime value. If you're looking for a specific file mentioned in a different context, you may need to refer back to that source or contact the person or organization that provided the information.