I've worked in multiple organizations that run small Access apps here and there and for us the main cost is just sitting down and doing it. My last job was at

I've worked in multiple organizations that run small Access apps here and there and for us the main cost is just sitting down and doing it. My last job was at an HR company and things were historically done through Access and spreadsheets, until an IT guy came along and started writing C# web apps, rose in prominence and now runs a small internal software team. I worked for that guy. It's not terribly politically difficult to convert existing applications, but it's mind numbing work and it's bottom priority. There's not a huge need to change something that already works, and the only reason you do it is you know it can't stay like that forever.