That's good feedback. We'll update the pricing page accordingly when the time comes. Question: do you worry about usage based billing with respect to surprise charges? Or do you expect a way to limit this?
It's extremely useful to prototype and experiment with a project and have it have a total budget that will not be surpassed.
One more idea: pay as you go. I pay $10, that turns out to be not enough, I pay another $20 and get immediately unblocked.
Limiting would be ideal, but all I was suggesting is that you indicate above the fold that you have cheaper options