For pure data analysis, the spreadsheet is, indeed, king. To a point...Despite all of these extremely powerful features, the spreadsheet has limitations, which tend to manifest when you least expect it. Often, Murphy's Law applies and the spreadsheet falls over when you are right in the middle of a major undertaking, like month-end or meeting a tight deadline.
"Spreadsheets for Small Business" is a complete package of ready-made spreadsheets that optimizes and facilitates a series of business processes such as sales exec commission tracking, calculating business expenses and planning budgets. The "Spreadsheet for Small Business" package incorporates valuable programmed spreadsheets such as "Small Business Expense Spreadsheet" - provides accountants and tax-preparers with a complete report on relevant business expenses; "Producer's Budget" - helps users to establish budgets and keep track of their spending; "Monthly Personal Budget" - designed to track daily, weekly and monthly spending for individuals.
Selling spreadsheets helps you to build a catalog of spreadsheets that you can take with you and use in various areas of your life. Spreadsheets built for sale are usually built for flexibility and would be customizable to your life, or job, or new life, or new job.
A winning spreadsheet could make you a fortune. If you could effectively identify what many people want and are willing to pay for, and can make your spreadsheet easily accessible, you could be cashing checks for the rest of your life.