>You rarely see anything more than a couple hundred bucks a month. There are notable exceptions, but unfortunately a lot of those notable exceptions are scammy, spammy business models.

I suspect this is largely sampling bias.

I host meetups for indie founders, and several attendees earn their living through solo businesses. When I go to conferences like Microconf, I meet lots more.

The problem with measuring financial success by who posts about it on HN is:

* The more someone is making at their solo business, the less they want to blab about it and attract competitors.

* The people earning at the low end are more desperate for people to see what they're doing so they can pick up new customers, so they're more likely to talk about their work.

* The more successful founders are busier and spend less time posting on HN.