The only good thing about Amazon it's that is the easiest thing in the world to manage once you wrap your head around the platform (hehe, sorry Tante...) - the service is rock solid, by far the best for masternode performance I've seen. It is the best for auto-scaling I know.

 Given that, I'm not using them anymore since I've found others that do an equally good job, and no surprise bills. I've had the odd 20$ bill myself.