[Viliam1234]

A month or two ago some product was advertised (ahem, upvoted) on Hacker News that offered a free tier. It sounded interesting and I wanted to try, but the website didn't allow to create an account for the free tier specifically. Instead it was like: create a general account, and if your usage remains below X it is free, and as soon as it goes above X you agree to pay. With no way to cap usage, i.e. no way to cap spending.

In other words, the only way to access the "free trial" is to give a blanket promise to pay unlimited amount of money if something goes wrong.

There is no way I would agree to that, so I just closed the browser tab and forgot about the whole thing. That is, until this debate reminded me of it.

For an online service, implementing the cap should be quite simple, so if it is not available, I am going to assume this is intentional.