[7thaccount]

Yep.

Things like Matlab and Mathematica end up in the $2k to $3k for commercial business, but just a few hundred for hobbyists.

I've been playing with a batteries included (like kitchen sink, but still tiny) Forth language (pretty rare as most Forths are focused on embedded) called 8th that is dirt cheap for a professional edition. I think it has a good price model as it is exactly what I'd be comfortable paying for something niche.