Well, there's a cost calculator that you can use to get an idea (though it requires understanding their services somewhat to put it together correctly): http://

Well, there's a cost calculator that you can use to get an idea (though it requires understanding their services somewhat to put it together correctly): http://calculator.s3.amazonaws.com/index.html http://calculator.s3.amazonaws.com/index.html You can also set up billing alerts, though as has been discussed, they aren't strict caps, so you can still exceed your cap.