I'd rather leave the industry and product out, but I'll tell you it's an industry every one of you have been a apart of at one point or another, it's nothing special. I'd also like to say there were/are many competitors in the market.
The current pricing is about $10 per-seat/month. I experimented with a few pricing points, it's not optimal by any standards but it works so I left it alone. I wanted to make it as accessible as possible.
The product has been running since last November (2016). It was profitable within the first week and has been growing ever since.
I did no paid ads and no content marketing or anything like that. I basically cold emailed people I thought would be interested in it. It grew organically from there. Now there's a lot of blogs and people at conferences talking about it and I get traffic from all over.
As for how much maintenance/time I spend on it?
At this point I spend between 0-60 minutes a week on technical/code maintenance.
I spend 0-20 minutes a day (in the morning) on answering support/feedback questions and cold emailing potential customers.
It's not something I have to do every day, but it works well for me.