Just a drop a credit card into the Billing account and be done with it?
https://groups.google.com/forum/m/#!topic/google-appengine/j...
I don't have a credit card and don't plan to have one. I chose GAE because it's the only one which does not need credit card. I can compromise with the GAE heavy limitations because of that.
Because of this I might as well just choose AWS.