When setting up production clusters via kops on AWS I opt for c4.large instances for the master, which with a HA quorum costs $250/month. If you use the default

When setting up production clusters via kops on AWS I opt for c4.large instances for the master, which with a HA quorum costs $250/month. If you use the default master instance type in kops, m3.medium, it's around $174/month. I fail to see the problem with AWS charging $150/month for a fully managed alternative.