The reasoning and the described scenario could be mine.
I do like the results and everything overall, it is just that there is this $10 mysterious pricing wall...
I would separate the professional use case completely. I use a streaming music provider a lot, this is my personal preference that I would like to use it, probably would not have started using it if costed more, it was $3 back then.
It is also be put as professional use, because it helps my work a lot, helped my studies even more, yet still it is still relatively cheap, because of the emotional binding between me and that product.
JetBrains deliver awesome IDEs for a solid price, even their product is something not justified enough by most companies I know, though people can clearly explain how it is Ultimate is more beneficial, than the free tier.
Pricing is heavily affected by the cultural environment where one is coming from - that is a clear, I am from Central Europe.
I'm not over-educated about the subject, but for a search engine to really shine the more users, the better.