I believe the foregoing are compelling justifications for choosing Excel Visual Basic over Visual Basic.
Custom spreadsheet solutions which survive long after the developer has "left the scene", are often those which users accept because they discover it _ among other benefits _ makes their work quicker and easier to do. That is why the best person to develop such solutions tend to be one who works in that area, and is therefore familiar with the way the manual system operates. S/he would have an "insider's" perspective of the best way to introduce automation other users will readily adopt _ even as it solves the identified problem(s).
1. The Pareto Principle _ Using spreadsheet tracking, you can easily apply the Pareto principle in deciding which of your income sources and expense channels(i.e. products and services sales) to focus on in order to maximize profits. Considering that you are most likely to use the same marketing/sales resources to serve your customers, it only follows that if you focus on your biggest margin selling products/services, you will get increased profits at more or less the same cost.
Why Excel Visual Basic _ and NOT Visual Basic? I always answer this question by asking the following question: What would be the point of "Killing A Fly With A Hammer"? Let me elaborate. If a method is available that allows us to achieve the same desired result(s) at LOWER cost, with LESS effort and in LESS time, why should we fail to adopt it? Certain IT persons insist that developing executable applications using the standalone Visual Basic programming language is "better" as it does not limit the user to a particular user application software environment. I concede that this might be a valid point under certain conditions. However, I point out that there are many users who have peculiar needs that do not necessarily require complex solutions. A lot of people today simply want to get their data recording, (re)organisation, and analysis for decision making done quicker and with less effort. They also want to spend as little money as possible to do this. In other words, they want a cost_effective solution that gives them independence from the solution provider in the long term _ without requiring them to undertake laborious skills acquisition immediately. This category of everyday users of technology described above are the ones I believe need Excel VB solutions of the type I describe. One expects that some of these users will over time develop an interest in acquiring advanced skills needed to develop their own solutions in future _ which is why I also encourage them to do so, possibly via self_tutoring, like I did.