Change Cloud SQL Server Status from Runnable to Running
At the moment a Cloud SQL instance says it is 'Runnable' when it is running. I had checked to see if I had left anything running a few times but because of the wording I thought it meant it was ready to run, and was not currently running. I only realised when I received my invoice this month. Thankfully the free trial covered it but it may be an idea to re word this state to 'Running' instead of 'Runnable'.
I guess this goes for anything else with similar state wording.