Hi i was reading the documentation about autoscaling, so i have a few things questions about it.

1. DO bills the instance hourly even if we don’t use it for an hour, is this also true for kubernetes?
2. How does it handle autoscaling down? does it take into consideration about the 1 hour billing? (like choosing a node near the 1 hour mark to scale down).
3. can we have a secondary node pool that scales down to 0? (ex: i already have a primary node pool with 2 shared droplet nodes, then i want to have a secondary compute optimized node pool that autoscales 0 to 5)