[fragmede]

What randoms on the Internet think isn't useful to you, unless you want to make it your business a business-to-developer (B2D, a subset of B2C) company. Those tend to be difficult (difficult != impossible) as developers are cheap and don't efficiently time optimize. (https://miro.medium.com/v2/resize:fit:735/1*6Oyig2ACF-unC3R-...) Pricing is a dark art and not very scientific. it's not just take the cost to make the product and give yourself a profit margin and you're done. there's some advice at https://news.ycombinator.com/item?id=26553639 has a bit

Who you want to ask is though is people on developer productivity teams at large companies that have the budget to spend $10,000+ per year on a tool that will save the company > $10,000 (or whatever number you can justify using some back of the envelope math based on how often the checker needs to run how much faster yours is and how much that would save an organization with N developers.

B2B sales is difficult for a traditional software engineer (that would write such a tool in the first place to do) to do alone though, so you may want to seek outside help.

[primering]

you are probably right, but you know it's just that I really want to have a crazy fast typescript checker myself but can not justify the work when I know either nobody else will use it or those who use it steal my time without giving anything ($) back

[fragmede]

both those possibilities are there, but there's also the third possibility where you make this thing that there's clearly a need for and it saves time/money, and you sell it for money, and you get rich.