[dsiegel2275]

That is the exact niche type of side project that I dream about. Though, with "a couple thousand users paying around $10 a month" that is hardly a side project anymore, given the annual revenue north of $200K.

[exceltrading]

I was quite lucky. It will help fund an early retirement.

[cosmodisk]

This is an example of such software: https://www.xappex.com/

Basically allows to edit Salesforce data directly in excel. I bet they've got thousands of users.

[kilbuz]

Pin money in the Bay unfortunately!

[petesergeant]

But enough to retire off a decade or two early if you set up somewhere low-tax and cheap-to-live