And another example since IoT is mentioned on the website. Imagine I'm selling a temperature sensor gadget that reports once per minute. That's 2 credits * 60 * 24 * 30 per month. Even at the highest level that means 115 devices for $999 per month. If I want to sell the gadget for $10 one-off (not a low price taking into account retail margins) you can see the problem.