It is pretty visible now. Was it pretty visible before? Was it the same amount when OP signed up? That's what he is arguing, it wasn't a limitation when he started to pay.
They have ALWAYS been very visible. They may have changed just like the cost of the VPS or whatever infrastructure you rent may change. I'm not arguing that serverless platforms have fair pricing—I don't think they do—but I'm arguing that if you subscribe to a platform that bills on usage, it's 100% your fault if you fail to monitor your usage and get insane bills.
