Charges for turned off droplets?
I just joined and created my first droplet a few days ago. I kept it on for about 3 hours and then turned it off. The next day, I saw that I owed about $0.18, which is what I expected at $0.06/hr. Today, however, I logged in and saw that I owe $1.61 for 27 hours of time. However, my droplet has only been on for those initial 3 hours. I guess my question is obvious:
Are we charged for each hour the droplet exists, or for each hour that it is turned on? It seems to me that it must be the former, but my AWS experience has taught me to expect the latter.