On the other hand, most SaaS founders, especially in B2B, are inclined to charge too little for their service. So the coffee analogy can wake you up that $5/mo or $10/mo is an almost ridiculously low price for a piece of software that solves any sort of problem.
It's worth pondering why SaaS founders are so inclined toward underpricing. I think this is because SaaS founders, especially if they are developers, tend to be really frugal in their SaaS and PaaS spending. For example, they'll use things like their DigitalOcean Droplet cost or their GitHub Pro subscription as a point of comparison. They'll think, "Those services are so valuable, and so cheap, so why would anyone buy my thing for more? I certainly wouldn't."
But what they tend to forget or ignore is that, especially in B2B, it's not your buyer's wallet or money at stake. It's your buyer's (or your buyer's department's) allocated budget. And budget allocations for businesses in mid-market and enterprise are always measured in thousands of dollars, and sometimes in millions.
All they care about is spending the money wisely -- that is, appropriately trading money for revenue, for cost reduction, for time savings, for company cultural impact, or, ideally, for all of the above. At that point, pricing too low can be counterproductive: many enterprises will, consciously or subconsciously, worry that your pricing being that low means you are a counterparty risk and thus not even worth hiring as a vendor.
In the B2C space or in the "B2B tools for individual employees" space, to understand your pricing power requires understanding your buyer demographics. If you are selling productivity software to executives, they will think in terms cost relative to their time and the time of their assistants and subordinates. If you are selling hosting software to entrepreneurs, they will want low starting pricing but be OK with pricing that scales quickly with growth. If you are selling a video streaming or premium content service to consumers, they will anchor you against Netflix, Disney+, Hulu, and cable. Selecting your price is a very important part of your strategy and how your service is perceived. Picking the lowest price you can afford at reasonable margins, which is a kind of obvious default, is often a terrible strategy.