I bill monthly, and get paid by bank transfer (is there any other way?).
My two profitable SaaS have combined a few hundred active subscribers, maybe 5% of what I can make consulting. They are low-cost consumer products, so I’d need 5k active subscribers before I would think about not consulting. Without a breakthrough in marketing, I don’t see how I’ll ever get there.
My main bottleneck is I don’t really know how to market them sustainably. Most customers have come from HN or word of mouth.
My next software product will be high-price ($200-500, ideally a subscription). But there’s no free lunch. Most high-price software is feature heavy, especially enterprise apps. That is potentially months of unpaid development work without any guarantee of success. Very difficult for me because I have a family to support. The trick for me is to find something where the MVP is not too time intensive to build, but provides hundreds of dollars a month in value to other businesses.