Increase the message limit for the free tier IoT Event Hub
Currently there is too much of a gap between the free IoT Event Hub (8k messages per unit) vs the first paid tier (400k messages per unit). The cost jumps from free to an estimated £30 per month. The free tier needs to have its message limit increased. 8k is barely enough for a decent demo during community talks.
Simon Opelt commented
Either that or allow transitions between free and paid tiers. This would be great for demo or development purposes.