Turning one on is free, and so is the watching. Each insight a template finds uses credits (a little over one), and a completed action step adds about one more, all capped by your daily budget.
Yes, and you should: a template is a starting sentence, not a contract. Edit the wording in the builder or just tell Binee in chat, like "only watch promises made to our top five clients".
Inside the app the library only offers templates your connected tools can power, so nothing you turn on can silently do nothing. If a tool you rely on is missing from Binee entirely, request it: most integrations ship within days.