In 2024? you anchor!

You make the tool convert to brainfuck for 9.99 and for 39.99 you can also have C. For everything else it's a 9.99 extra/month, except JS. You make JS (replace JS with the main language you're targeting) available only as part of a bundle at 29.99 extra/month but only if they've already got the 39.99 option.

There, priced.