Personally i find $10 a month to be too expensive, but don't we all pay for search engines in a way? With Google you don't pay directly but with your information and by getting influenced in your behaviour (e.g. to buy something from someone who in return pays google for advertisement).
This feels like google when google was new. I’ve been using the summarizer more and reading the articles I send it to understand how it works. It definitely has its use cases