I did some napkin math, turned on their product, and ran up a $10,000+ bill in my first half day of trying the service.
You have to talk to their sales funnel to ask for forgiveness. It was an awful experience.
Not only do they not have reasonable billing limits or triggers in place, but these are quite hidden.
We're using free tools now: Google Analytics (obviously), Microsoft Clarity (session recording), and hand-rolled feature flags.