[dragonwriter]

> What about prepaid credit cards with payment limit? If the payment failed the service will be terminated?

Never used one for this purpose but since billing happens after the fact (and monthly), AWS won't be aware of the limit until after the monthly billing occurs. They’ll just tell you the card failed and you have a billing liability to take care of (and give you some time to fix it) while still letting you rack up additional debt with services running after the billing fails; they definitely won't cut you off when you've reached the level that would meet the limit on your card (and couldn't even in theory without realtime notification of other charges against the card, even if they were inclined to.)